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Finding the Fourth Proportional to 99,659.76, 137,537.28 and 60,914.24

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Solution

The fourth proportional to 99,659.76, 137,537.28 and 60,914.24 is: 84,065.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,659.76 : 137,537.28 = 60,914.24 : x
  2. Step 2: Convert to fraction form
    99,659.76/137,537.28 = 60,914.24/x
  3. Step 3: Cross multiply
    99,659.76x = 137,537.28 × 60,914.24
  4. Step 4: Simplify right side
    99,659.76x = 8,377,978,882.87
  5. Step 5: Solve for x
    x = 8,377,978,882.87/99,659.76
  6. Step 6: Final answer
    x = 84,065.81

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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.