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Finding the Fourth Proportional to 58,231.74, 87,352.17 and 20,799.90

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Solution

The fourth proportional to 58,231.74, 87,352.17 and 20,799.90 is: 31,201.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,231.74 : 87,352.17 = 20,799.90 : x
  2. Step 2: Convert to fraction form
    58,231.74/87,352.17 = 20,799.90/x
  3. Step 3: Cross multiply
    58,231.74x = 87,352.17 × 20,799.90
  4. Step 4: Simplify right side
    58,231.74x = 1,816,916,400.78
  5. Step 5: Solve for x
    x = 1,816,916,400.78/58,231.74
  6. Step 6: Final answer
    x = 31,201.48

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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.