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Finding the Fourth Proportional to 54,879.57, 82,431.86 and 36,186.57

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Solution

The fourth proportional to 54,879.57, 82,431.86 and 36,186.57 is: 54,354.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,879.57 : 82,431.86 = 36,186.57 : x
  2. Step 2: Convert to fraction form
    54,879.57/82,431.86 = 36,186.57/x
  3. Step 3: Cross multiply
    54,879.57x = 82,431.86 × 36,186.57
  4. Step 4: Simplify right side
    54,879.57x = 2,982,926,272.12
  5. Step 5: Solve for x
    x = 2,982,926,272.12/54,879.57
  6. Step 6: Final answer
    x = 54,354.04

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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.