A:B=2:3=4:6=8:12
B:C=2:3=6:9=12:18
C:D=2:3=18:27
A:B:C:D=8:12:18:27
A=260÷(8+12+18+27)x8=32
B=260÷(8+12+18+27)x12=48
C=260÷(8+12+18+27)x18=72
D=260÷(8+12+18+27)x27=108
A:B=2:3=4:6=8:12
B:C=2:3=6:9=12:18
C:D=2:3=18:27
A:B:C:D=8:12:18:27
A=260÷(8+12+18+27)x8=32
B=260÷(8+12+18+27)x12=48
C=260÷(8+12+18+27)x18=72
D=260÷(8+12+18+27)x27=108