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Finding the Fourth Proportional to 71,291.48, 106,951.98 and 21,369.56

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Solution

The fourth proportional to 71,291.48, 106,951.98 and 21,369.56 is: 32,058.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,291.48 : 106,951.98 = 21,369.56 : x
  2. Step 2: Convert to fraction form
    71,291.48/106,951.98 = 21,369.56/x
  3. Step 3: Cross multiply
    71,291.48x = 106,951.98 × 21,369.56
  4. Step 4: Simplify right side
    71,291.48x = 2,285,516,753.73
  5. Step 5: Solve for x
    x = 2,285,516,753.73/71,291.48
  6. Step 6: Final answer
    x = 32,058.76

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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.