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Finding the Fourth Proportional to 61,882.70, 85,396.95 and 36,391.86

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Solution

The fourth proportional to 61,882.70, 85,396.95 and 36,391.86 is: 50,220.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,882.70 : 85,396.95 = 36,391.86 : x
  2. Step 2: Convert to fraction form
    61,882.70/85,396.95 = 36,391.86/x
  3. Step 3: Cross multiply
    61,882.70x = 85,396.95 × 36,391.86
  4. Step 4: Simplify right side
    61,882.70x = 3,107,753,848.83
  5. Step 5: Solve for x
    x = 3,107,753,848.83/61,882.70
  6. Step 6: Final answer
    x = 50,220.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.