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Finding the Fourth Proportional to 87,716.70, 131,556.15 and 27,749.88

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Solution

The fourth proportional to 87,716.70, 131,556.15 and 27,749.88 is: 41,618.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,716.70 : 131,556.15 = 27,749.88 : x
  2. Step 2: Convert to fraction form
    87,716.70/131,556.15 = 27,749.88/x
  3. Step 3: Cross multiply
    87,716.70x = 131,556.15 × 27,749.88
  4. Step 4: Simplify right side
    87,716.70x = 3,650,667,375.76
  5. Step 5: Solve for x
    x = 3,650,667,375.76/87,716.70
  6. Step 6: Final answer
    x = 41,618.84

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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.