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Finding the Fourth Proportional to 54,972.60, 82,458.90 and 49,140.60

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Solution

The fourth proportional to 54,972.60, 82,458.90 and 49,140.60 is: 73,710.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,972.60 : 82,458.90 = 49,140.60 : x
  2. Step 2: Convert to fraction form
    54,972.60/82,458.90 = 49,140.60/x
  3. Step 3: Cross multiply
    54,972.60x = 82,458.90 × 49,140.60
  4. Step 4: Simplify right side
    54,972.60x = 4,052,079,821.34
  5. Step 5: Solve for x
    x = 4,052,079,821.34/54,972.60
  6. Step 6: Final answer
    x = 73,710.90

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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.