[tex] \frac{a}{c} = \frac{4}{7} [/tex]
c = 63
[tex] \frac{4}{7} = \frac{a}{63} [/tex]
[tex] \frac{4}{7} = \frac{a}{63} [/tex]
7a = (4) (63)
[tex] \frac{7a}{7} = \frac{252}{7} [/tex]
a = 36
[tex] \frac{a}{b} = \frac{3}{5} [/tex]; a = 36
[tex] \frac{3}{5} = \frac{36}{b} [/tex]
3b = (5)(36)
[tex] \frac{3b}{3} = \frac{180}{3} [/tex]
b = 60
The sum of a, b, and c, where a=36; b=60; c=63
36 + 60 + 63 = 159