i) 250400=5×508×50=58
Two more fractions are 2540,3048
ii) 180200=9×2010×20=910
Two more fractions are 1820,2730
iii) 660990=2×3303×330=23
Two more fractions are 2030,200300
iv) 180360=1×1802×180=12
Two more fractions are 2040,3060
2040,3060=2×1105×110=25
v) 220550=2×1105×110=25
Two more fractions are 2040,40100