They are: 102,030 153,045 204,060 and255,075
As presented in the question it looks like a single number 51015. The lowest common multiple of 51015 depends upon the other number(s) with which 51015 has common multiples, but it will always be one of the multiples of 51015, namely: 51015, 102030, 153045, 204060, 255075, 306090, ... However, I suspect that you wrote the question separating 5 10 and 15 by commas with no spaces following the commas (ie ``...multiple of 5,10,15'') - unfortunately due to limitations some punctuation (the comma being one of them) get stripped from questions. The lowest common multiple of 5, 10 and 15 is 30.
Assuming you are talking about starting at three, the next four multiples are six, nine, twelve and fifteen.The answer depends on next after what!
1/8, 2/8, 3/8, 4/8
6, 12, 18, 24
The factors of 51015 are: 1, 5 1, 2, 5, 10 1, 3, 5, 15
21, 28, 35, 42, 49
The answer depends on what the fraction is to be multiplied by!
24, 48, 72, 96
0.2
3/5,6/5,9/5
48, 72, 96, 120
4=22 10=2x5 So the LCM of 4 and 10 is 22x5=20 and the next multiples of both 4 and 10 are multiples of 20