For 3 consecutive numbers, the average equals the middle number.<br><br>&bull; Middle number = 39<br>&bull; The 3 numbers are: 38, 39, 40<br>&bull; Largest number = 40<br><br>&bull; Check: (38 + 39 + 40) ÷ 3 = 117 ÷ 3 = 39. ✓<br><br>Final Answer: 40