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Finding the Fourth Proportional to 42,508.80, 63,763.20 and 37,916.10

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Solution

The fourth proportional to 42,508.80, 63,763.20 and 37,916.10 is: 56,874.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,508.80 : 63,763.20 = 37,916.10 : x
  2. Step 2: Convert to fraction form
    42,508.80/63,763.20 = 37,916.10/x
  3. Step 3: Cross multiply
    42,508.80x = 63,763.20 × 37,916.10
  4. Step 4: Simplify right side
    42,508.80x = 2,417,651,867.52
  5. Step 5: Solve for x
    x = 2,417,651,867.52/42,508.80
  6. Step 6: Final answer
    x = 56,874.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.