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Finding the Fourth Proportional to 76,061.88, 113,930.28 and 61,765.92

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Solution

The fourth proportional to 76,061.88, 113,930.28 and 61,765.92 is: 92,516.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,061.88 : 113,930.28 = 61,765.92 : x
  2. Step 2: Convert to fraction form
    76,061.88/113,930.28 = 61,765.92/x
  3. Step 3: Cross multiply
    76,061.88x = 113,930.28 × 61,765.92
  4. Step 4: Simplify right side
    76,061.88x = 7,037,008,560.06
  5. Step 5: Solve for x
    x = 7,037,008,560.06/76,061.88
  6. Step 6: Final answer
    x = 92,516.89

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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.