If `3x+4:x+5` is the duplicate ratio of `8:15,` find `x.`

The duplicate ratio of 4:5 is

The duplicate ratio of 4:5 is

If (x + 3) : (4x +1) is the duplicate ratio of 3 : 5 , find the value of x .

If (x-9):(3x+6) is the duplicate ratio of 4:9 , find the value of x using properties of proportion.

If (3x - 9) : (5x + 4) is the triplicate ratio of 3 : 4 , find the value of x .

If x : y = 3:5 , find the duplicate ratio of (3x+y) : (5x-y) .

Find the value of x , if : (i) (2x + 3) : (5x - 38) is the duplicate ratio of sqrt(5) : sqrt(6). (ii) (2x + 1) : (3x + 13) is the sub-duplicate ratia of 9 : 25 . (iii) (3x - 7) : (4x + 3) is the sub-triplicate ratio of 8 : 27 .

Find the ratio compounded of the reciprocal ratio of 15 : 28 , the sub-duplicate ratio of 36 : 49 and the trilicate ratio of 5 : 4 .