Resize my Powerpoint Presentation

Kidd_Ip ,

Thanks for your suggestion but Slide Master is for standard content that I want able to change without affecting slide unique content. That is not my problem.

I have unique content on every slide. Multiple text boxes that contain different text fonts in them. I am using this presentation to print a booklet. My customer would like the booklets in 4 different sizes. I want to create one master size and then create copies at the requested sizes. 

How do I shrink/enlarge all of the unique content and fonts for the entire booklet?

Currently I can resize all of the text boxes so that all of the box sizes keep the correct ratio to each other. The problem is that the various text sizes within the boxes do not change to correspond to the new box size. So I have to go back in and manually resize all of the text. I would like PPT to automatically change the fonts within the text boxes to match the new box sizes.

I was able to do this last year but bow I can't replicate what I did last year.