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three numbers are in ratio 1/2 : 1/3 : 1/4
=1/2×12 : 1/3×12 : 1/4×12
=6 : 4 : 3
sum of the numbers 455
1st number=6×455/(6+4+3)
=6×455/13
=6×35
=210
2nd number is 4×455/(6+4+3)
=4×455/13
=4×35
=140
3rd number is 3×455/(6+4+3)
=3×455/13
=3×35
=105
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