Values of 2
nd number = 7 and 6 (They are not the same)
Make the values of 2nd number same as follows -
Multiply 3:7 up and down with 6 as shown
Multiply 6:5 up and down with 7 as shown
Values of 2nd number are now same = 421
st number : 2
nd number = 18 : 42
2
nd number : 3
rd number = 42 : 35
1
st number : 2
nd number : 3rd number = 18 : 42 : 35
Common factor helps in finding actual values easilySo, take ‘A’ as common factor.
So now the 3 numbers are 18A, 42A and 35A
18A + 42A + 35A = 285
A = 3
3
rd number = 35A = 35 x 3 = 105