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Finding the Fourth Proportional to 71,976.60, 107,676.54 and 62,220.96

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Solution

The fourth proportional to 71,976.60, 107,676.54 and 62,220.96 is: 93,082.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,976.60 : 107,676.54 = 62,220.96 : x
  2. Step 2: Convert to fraction form
    71,976.60/107,676.54 = 62,220.96/x
  3. Step 3: Cross multiply
    71,976.60x = 107,676.54 × 62,220.96
  4. Step 4: Simplify right side
    71,976.60x = 6,699,737,688.28
  5. Step 5: Solve for x
    x = 6,699,737,688.28/71,976.60
  6. Step 6: Final answer
    x = 93,082.16

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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.