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Finding the Fourth Proportional to 82,327,991.70, 123,491,987.55 and 21,743,717.70

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Solution

The fourth proportional to 82,327,991.70, 123,491,987.55 and 21,743,717.70 is: 32,615,576.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,327,991.70 : 123,491,987.55 = 21,743,717.70 : x
  2. Step 2: Convert to fraction form
    82,327,991.70/123,491,987.55 = 21,743,717.70/x
  3. Step 3: Cross multiply
    82,327,991.70x = 123,491,987.55 × 21,743,717.70
  4. Step 4: Simplify right side
    82,327,991.70x = 2,685,174,915,499,114.50
  5. Step 5: Solve for x
    x = 2,685,174,915,499,114.50/82,327,991.70
  6. Step 6: Final answer
    x = 32,615,576.55

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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.