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Finding the Fourth Proportional to 54,832.50, 82,249.20 and 13,279.50

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Solution

The fourth proportional to 54,832.50, 82,249.20 and 13,279.50 is: 19,919.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,832.50 : 82,249.20 = 13,279.50 : x
  2. Step 2: Convert to fraction form
    54,832.50/82,249.20 = 13,279.50/x
  3. Step 3: Cross multiply
    54,832.50x = 82,249.20 × 13,279.50
  4. Step 4: Simplify right side
    54,832.50x = 1,092,228,251.40
  5. Step 5: Solve for x
    x = 1,092,228,251.40/54,832.50
  6. Step 6: Final answer
    x = 19,919.36

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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.