Question 951505
How do the ratios of the corresponding sides compare?


75:8 1/2 :: 90:11.


8.823, 8.182


The long or tall side is limited when expanded onto the mural sized piece.


The wanted 1 inch to 9 feet magnification:
8.5*9=76.5;
11*9=99;  This dimension will be too big for the mural size piece.


A possible choice is to use lower scale magnification.  Trying {{{(90/99)*9=(10/11)*9=8.2}}}.


The 1 inch to 9 feet scaling not possible.
A 1 inch to about 8.2 feet scaling could work, depending on how good the result visually.