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Finding the Fourth Proportional to 65,115.60, 97,882.20 and 60,493.20

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Solution

The fourth proportional to 65,115.60, 97,882.20 and 60,493.20 is: 90,933.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,115.60 : 97,882.20 = 60,493.20 : x
  2. Step 2: Convert to fraction form
    65,115.60/97,882.20 = 60,493.20/x
  3. Step 3: Cross multiply
    65,115.60x = 97,882.20 × 60,493.20
  4. Step 4: Simplify right side
    65,115.60x = 5,921,207,501.04
  5. Step 5: Solve for x
    x = 5,921,207,501.04/65,115.60
  6. Step 6: Final answer
    x = 90,933.78

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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.