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Finding the Fourth Proportional to 67,967,728.60, 101,951,592.90 and 19,447,165.30

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Solution

The fourth proportional to 67,967,728.60, 101,951,592.90 and 19,447,165.30 is: 29,170,747.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,967,728.60 : 101,951,592.90 = 19,447,165.30 : x
  2. Step 2: Convert to fraction form
    67,967,728.60/101,951,592.90 = 19,447,165.30/x
  3. Step 3: Cross multiply
    67,967,728.60x = 101,951,592.90 × 19,447,165.30
  4. Step 4: Simplify right side
    67,967,728.60x = 1,982,669,479,724,606.50
  5. Step 5: Solve for x
    x = 1,982,669,479,724,606.50/67,967,728.60
  6. Step 6: Final answer
    x = 29,170,747.95

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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.