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Finding the Fourth Proportional to 279,936,732.20, 419,905,098.30 and 279,936,732.20

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Solution

The fourth proportional to 279,936,732.20, 419,905,098.30 and 279,936,732.20 is: 419,905,098.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,732.20 : 419,905,098.30 = 279,936,732.20 : x
  2. Step 2: Convert to fraction form
    279,936,732.20/419,905,098.30 = 279,936,732.20/x
  3. Step 3: Cross multiply
    279,936,732.20x = 419,905,098.30 × 279,936,732.20
  4. Step 4: Simplify right side
    279,936,732.20x = 117,546,861,052,221,776
  5. Step 5: Solve for x
    x = 117,546,861,052,221,776/279,936,732.20
  6. Step 6: Final answer
    x = 419,905,098.30

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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.