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Finding the Fourth Proportional to 71,976.70, 99,327.92 and 41,768.16

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Solution

The fourth proportional to 71,976.70, 99,327.92 and 41,768.16 is: 57,640.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,976.70 : 99,327.92 = 41,768.16 : x
  2. Step 2: Convert to fraction form
    71,976.70/99,327.92 = 41,768.16/x
  3. Step 3: Cross multiply
    71,976.70x = 99,327.92 × 41,768.16
  4. Step 4: Simplify right side
    71,976.70x = 4,148,744,108.65
  5. Step 5: Solve for x
    x = 4,148,744,108.65/71,976.70
  6. Step 6: Final answer
    x = 57,640.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.