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Finding the Fourth Proportional to 54,489.78, 81,791.91 and 48,289.50

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Solution

The fourth proportional to 54,489.78, 81,791.91 and 48,289.50 is: 72,484.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,489.78 : 81,791.91 = 48,289.50 : x
  2. Step 2: Convert to fraction form
    54,489.78/81,791.91 = 48,289.50/x
  3. Step 3: Cross multiply
    54,489.78x = 81,791.91 × 48,289.50
  4. Step 4: Simplify right side
    54,489.78x = 3,949,690,437.95
  5. Step 5: Solve for x
    x = 3,949,690,437.95/54,489.78
  6. Step 6: Final answer
    x = 72,484.98

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.