Are there any common denominators of the numbers 3 4 25?

There are plenty of multiples of all of 3, 4 and 25; they are all multiples of the lcm(3, 4, 25) = 300:

300, 600, 900, 1200, 1500, 1800, 2100, 2400, 2700, 3000, 3300, 3600, 3900, 4200, 4500, 4800, 5100, 5400, 5700, 6000, 6300, 6600, 6900, 7200, 7500, 7800, 8100, 8400, 8700, 9000, 9300, 9600, 9900, 10200, 10500, 10800, 11100, 11400, 11700, 12000, 12300, 12600, 12900, 13200, 13500, 13800, 14100, 14400, 14700, 15000, 15300, 15600, 15900, 16200, 16500, 16800, 17100, 17400, 17700, 18000, 18300, 18600, 18900, 19200, 19500, 19800, 20100, 20400, 20700, 21000, 21300, 21600, 21900, 22200, 22500, 22800, 23100, 23400, 23700, 24000, 24300, 24600, 24900, 25200, 25500, 25800, 26100, 26400, 26700, 27000, 27300, 27600, 27900, 28200, 28500, 28800, 29100, 29400, 29700, 30000, ...

are all common multiples of 3, 4 and 25.