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Finding the Fourth Proportional to 41,640.67, 57,472.50 and 28,920.43

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Solution

The fourth proportional to 41,640.67, 57,472.50 and 28,920.43 is: 39,916.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,640.67 : 57,472.50 = 28,920.43 : x
  2. Step 2: Convert to fraction form
    41,640.67/57,472.50 = 28,920.43/x
  3. Step 3: Cross multiply
    41,640.67x = 57,472.50 × 28,920.43
  4. Step 4: Simplify right side
    41,640.67x = 1,662,129,413.18
  5. Step 5: Solve for x
    x = 1,662,129,413.18/41,640.67
  6. Step 6: Final answer
    x = 39,916.01

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.