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Finding the Fourth Proportional to 58,230.29, 87,363.90 and 20,789.55

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Solution

The fourth proportional to 58,230.29, 87,363.90 and 20,789.55 is: 31,190.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,230.29 : 87,363.90 = 20,789.55 : x
  2. Step 2: Convert to fraction form
    58,230.29/87,363.90 = 20,789.55/x
  3. Step 3: Cross multiply
    58,230.29x = 87,363.90 × 20,789.55
  4. Step 4: Simplify right side
    58,230.29x = 1,816,256,167.25
  5. Step 5: Solve for x
    x = 1,816,256,167.25/58,230.29
  6. Step 6: Final answer
    x = 31,190.92

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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.