Thanks for the responses. And yes, @jautor, being a novice with all this I may have misused the terminology.
I understand that every projector has a Throw Ratio with a min and max value representing the optimal distance the lens should be from the screen to remain within the projectors capabilities. If I place the projector at the min ratio value (closest to the screen) and adjust the image to be where I want it, then I'm assuming that the controls and adjustments provided by the projector would allow me to move the projector back to the max ratio (furthest from the screen) and still maintain the image size and position I had at the min ratio position.
I am researching a projector that will allow me to use the size screen I want, but when I use one of the many calculators out there it shows the throw distance for that size screen to be about 2 feet forward of the current position of the ceiling mount I have now. However, the throw range of the projector permits me to move the projector back to the position of my current ceiling mount and still be right in the middle of the projectors total throw ratio range. I'm assuming here that the projector's controls/adjustments are such that wherever I mount the projector, as long as it is inside the throw ratio distances, I will be able to maintain a consistent image size and position on the screen. I do understand that contrast is affected by the projector's distance from the screen, but my only concern at this time is the position and size of the projected image.
I believe @ctviggen has confirmed my assumptions, so thanks for input!
Current PJ: Optoma HD72
Current Screen: Carada 92" 16x9