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Finding the Fourth Proportional to 95,915, 132,379.80 and 60,135.68

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Solution

The fourth proportional to 95,915, 132,379.80 and 60,135.68 is: 82,997.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,915 : 132,379.80 = 60,135.68 : x
  2. Step 2: Convert to fraction form
    95,915/132,379.80 = 60,135.68/x
  3. Step 3: Cross multiply
    95,915x = 132,379.80 × 60,135.68
  4. Step 4: Simplify right side
    95,915x = 7,960,749,291.26
  5. Step 5: Solve for x
    x = 7,960,749,291.26/95,915
  6. Step 6: Final answer
    x = 82,997.96

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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.