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Finding the Fourth Proportional to 54,747.60, 82,121.39 and 13,194.60

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Solution

The fourth proportional to 54,747.60, 82,121.39 and 13,194.60 is: 19,791.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,747.60 : 82,121.39 = 13,194.60 : x
  2. Step 2: Convert to fraction form
    54,747.60/82,121.39 = 13,194.60/x
  3. Step 3: Cross multiply
    54,747.60x = 82,121.39 × 13,194.60
  4. Step 4: Simplify right side
    54,747.60x = 1,083,558,642.27
  5. Step 5: Solve for x
    x = 1,083,558,642.27/54,747.60
  6. Step 6: Final answer
    x = 19,791.89

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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.