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Finding the Fourth Proportional to 58,469.92, 87,683.11 and 21,019.77

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Solution

The fourth proportional to 58,469.92, 87,683.11 and 21,019.77 is: 31,521.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,469.92 : 87,683.11 = 21,019.77 : x
  2. Step 2: Convert to fraction form
    58,469.92/87,683.11 = 21,019.77/x
  3. Step 3: Cross multiply
    58,469.92x = 87,683.11 × 21,019.77
  4. Step 4: Simplify right side
    58,469.92x = 1,843,078,752.54
  5. Step 5: Solve for x
    x = 1,843,078,752.54/58,469.92
  6. Step 6: Final answer
    x = 31,521.83

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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.