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Finding the Fourth Proportional to 31,911.10, 44,033.49 and 18,480.49

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Solution

The fourth proportional to 31,911.10, 44,033.49 and 18,480.49 is: 25,500.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,911.10 : 44,033.49 = 18,480.49 : x
  2. Step 2: Convert to fraction form
    31,911.10/44,033.49 = 18,480.49/x
  3. Step 3: Cross multiply
    31,911.10x = 44,033.49 × 18,480.49
  4. Step 4: Simplify right side
    31,911.10x = 813,760,471.61
  5. Step 5: Solve for x
    x = 813,760,471.61/31,911.10
  6. Step 6: Final answer
    x = 25,500.86

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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.