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Finding the Fourth Proportional to 279,426,151.80, 419,139,227.70 and 97,654,375.80

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Solution

The fourth proportional to 279,426,151.80, 419,139,227.70 and 97,654,375.80 is: 146,481,563.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,426,151.80 : 419,139,227.70 = 97,654,375.80 : x
  2. Step 2: Convert to fraction form
    279,426,151.80/419,139,227.70 = 97,654,375.80/x
  3. Step 3: Cross multiply
    279,426,151.80x = 419,139,227.70 × 97,654,375.80
  4. Step 4: Simplify right side
    279,426,151.80x = 40,930,779,654,337,568
  5. Step 5: Solve for x
    x = 40,930,779,654,337,568/279,426,151.80
  6. Step 6: Final answer
    x = 146,481,563.70

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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.