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Finding the Fourth Proportional to 49,591.89, 74,387.82 and 12,655.89

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Solution

The fourth proportional to 49,591.89, 74,387.82 and 12,655.89 is: 18,983.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,591.89 : 74,387.82 = 12,655.89 : x
  2. Step 2: Convert to fraction form
    49,591.89/74,387.82 = 12,655.89/x
  3. Step 3: Cross multiply
    49,591.89x = 74,387.82 × 12,655.89
  4. Step 4: Simplify right side
    49,591.89x = 941,444,067.26
  5. Step 5: Solve for x
    x = 941,444,067.26/49,591.89
  6. Step 6: Final answer
    x = 18,983.83

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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.