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Finding the Fourth Proportional to 99,753.92, 149,685.96 and 40,631.22

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Solution

The fourth proportional to 99,753.92, 149,685.96 and 40,631.22 is: 60,969.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,753.92 : 149,685.96 = 40,631.22 : x
  2. Step 2: Convert to fraction form
    99,753.92/149,685.96 = 40,631.22/x
  3. Step 3: Cross multiply
    99,753.92x = 149,685.96 × 40,631.22
  4. Step 4: Simplify right side
    99,753.92x = 6,081,923,171.67
  5. Step 5: Solve for x
    x = 6,081,923,171.67/99,753.92
  6. Step 6: Final answer
    x = 60,969.26

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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.