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Finding the Fourth Proportional to 4,786,249.50, 7,179,436.78 and 1,591,375.68

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Solution

The fourth proportional to 4,786,249.50, 7,179,436.78 and 1,591,375.68 is: 2,387,084.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786,249.50 : 7,179,436.78 = 1,591,375.68 : x
  2. Step 2: Convert to fraction form
    4,786,249.50/7,179,436.78 = 1,591,375.68/x
  3. Step 3: Cross multiply
    4,786,249.50x = 7,179,436.78 × 1,591,375.68
  4. Step 4: Simplify right side
    4,786,249.50x = 11,425,181,064,711.74
  5. Step 5: Solve for x
    x = 11,425,181,064,711.74/4,786,249.50
  6. Step 6: Final answer
    x = 2,387,084.31

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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.