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Finding the Fourth Proportional to 71,251.40, 106,823.10 and 36,216.20

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Solution

The fourth proportional to 71,251.40, 106,823.10 and 36,216.20 is: 54,296.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,251.40 : 106,823.10 = 36,216.20 : x
  2. Step 2: Convert to fraction form
    71,251.40/106,823.10 = 36,216.20/x
  3. Step 3: Cross multiply
    71,251.40x = 106,823.10 × 36,216.20
  4. Step 4: Simplify right side
    71,251.40x = 3,868,726,754.22
  5. Step 5: Solve for x
    x = 3,868,726,754.22/71,251.40
  6. Step 6: Final answer
    x = 54,296.85

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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.