xy = 14÷38 = 14×83 = 23
yz = 13÷49 = 13×94 = 34
But,
x = 25T1, y = 35T1
y = 37T2, z = 47T2
Using y = y
35T1 = x = 37T2
T1T2 = 37 x 53 = 1521
T1=15 and T2=21
Thus , x = 25 x 15 = 6
y = 35 x 15 = 9
y = 37 x 21 = 9
z = 47 x 21 = 12
Hence; x : z = 6 : 12
= 1 : 2