You have 1/72... you want 1/35... 72/35 (the ratio) or enlarge 2.057x
If you have 1/35 and want 1/72 then 35/72 or reduce to 48.6% of original.
This works because the scales are ratios themselves, essentially always with a numerator of 1...
: Fellow modelers: I have a bit of a puzzle.
: If I know the size of a 1/72 scale decal.
: How do I determine what the size of that
: decal would be in 1/35 scale. I like simple
: please!! Please respond to me at
: Thank you!!