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Finding the Fourth Proportional to 67,675.92, 101,526.84 and 20,920.56

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Solution

The fourth proportional to 67,675.92, 101,526.84 and 20,920.56 is: 31,384.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,675.92 : 101,526.84 = 20,920.56 : x
  2. Step 2: Convert to fraction form
    67,675.92/101,526.84 = 20,920.56/x
  3. Step 3: Cross multiply
    67,675.92x = 101,526.84 × 20,920.56
  4. Step 4: Simplify right side
    67,675.92x = 2,123,998,347.83
  5. Step 5: Solve for x
    x = 2,123,998,347.83/67,675.92
  6. Step 6: Final answer
    x = 31,384.85

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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.