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Finding the Fourth Proportional to 59,978.40, 89,972.46 and 20,524.92

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Solution

The fourth proportional to 59,978.40, 89,972.46 and 20,524.92 is: 30,789.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,978.40 : 89,972.46 = 20,524.92 : x
  2. Step 2: Convert to fraction form
    59,978.40/89,972.46 = 20,524.92/x
  3. Step 3: Cross multiply
    59,978.40x = 89,972.46 × 20,524.92
  4. Step 4: Simplify right side
    59,978.40x = 1,846,677,543.70
  5. Step 5: Solve for x
    x = 1,846,677,543.70/59,978.40
  6. Step 6: Final answer
    x = 30,789.04

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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.