Answer:GREATEST TO LEASTStep-by-step explanation:Here are the arranged decimals from greatest to least:*Set 1:*1. 21.6212. 21.6123. 21.2164. 21.182*Set 2:*1. 453.92. 435.93. 94.354. 45.93*Set 3:*1. 4.3222. 3.4223. 3.2244. 2.432*Additional Set:*1. 404.42. 404.043. 40.4044. 4.404