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Finding the Fourth Proportional to 96,015.90, 143,764.65 and 75,279.90

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Solution

The fourth proportional to 96,015.90, 143,764.65 and 75,279.90 is: 112,716.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,015.90 : 143,764.65 = 75,279.90 : x
  2. Step 2: Convert to fraction form
    96,015.90/143,764.65 = 75,279.90/x
  3. Step 3: Cross multiply
    96,015.90x = 143,764.65 × 75,279.90
  4. Step 4: Simplify right side
    96,015.90x = 10,822,588,475.54
  5. Step 5: Solve for x
    x = 10,822,588,475.54/96,015.90
  6. Step 6: Final answer
    x = 112,716.63

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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.