No
30.8571
Yes 8 x 54 is 432
The LCM is: 432
No, think about your question for a second and you should be able to see why 144 is not a multiple of 432. The word multiple means more than or multiply. So to multiply 432 by 2 you get 864. Simply put, to be a multiple of a given number the multiple must be larger than said number. The multiples of 432 are 864, 1296, 1728.......just keep adding 432 to the number ad infinitum.
189
224/432 = 14/27
The LCM of 160 and 432 is 4320
224/432 = 14/27
432
432
432
432