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Finding the Fourth Proportional to 95,712.90, 143,310.15 and 74,976.90

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Solution

The fourth proportional to 95,712.90, 143,310.15 and 74,976.90 is: 112,262.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,712.90 : 143,310.15 = 74,976.90 : x
  2. Step 2: Convert to fraction form
    95,712.90/143,310.15 = 74,976.90/x
  3. Step 3: Cross multiply
    95,712.90x = 143,310.15 × 74,976.90
  4. Step 4: Simplify right side
    95,712.90x = 10,744,950,785.54
  5. Step 5: Solve for x
    x = 10,744,950,785.54/95,712.90
  6. Step 6: Final answer
    x = 112,262.31

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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.