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Finding the Fourth Proportional to 57,912.20, 86,882.87 and 16,359.20

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Solution

The fourth proportional to 57,912.20, 86,882.87 and 16,359.20 is: 24,542.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,912.20 : 86,882.87 = 16,359.20 : x
  2. Step 2: Convert to fraction form
    57,912.20/86,882.87 = 16,359.20/x
  3. Step 3: Cross multiply
    57,912.20x = 86,882.87 × 16,359.20
  4. Step 4: Simplify right side
    57,912.20x = 1,421,333,730.69
  5. Step 5: Solve for x
    x = 1,421,333,730.69/57,912.20
  6. Step 6: Final answer
    x = 24,542.91

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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.