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Finding the Fourth Proportional to 57,773.70, 86,660.55 and 51,212.70

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Solution

The fourth proportional to 57,773.70, 86,660.55 and 51,212.70 is: 76,819.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,773.70 : 86,660.55 = 51,212.70 : x
  2. Step 2: Convert to fraction form
    57,773.70/86,660.55 = 51,212.70/x
  3. Step 3: Cross multiply
    57,773.70x = 86,660.55 × 51,212.70
  4. Step 4: Simplify right side
    57,773.70x = 4,438,120,748.99
  5. Step 5: Solve for x
    x = 4,438,120,748.99/57,773.70
  6. Step 6: Final answer
    x = 76,819.05

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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.