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Finding the Fourth Proportional to 73,046.80, 109,572.93 and 20,454.92

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Solution

The fourth proportional to 73,046.80, 109,572.93 and 20,454.92 is: 30,683.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,046.80 : 109,572.93 = 20,454.92 : x
  2. Step 2: Convert to fraction form
    73,046.80/109,572.93 = 20,454.92/x
  3. Step 3: Cross multiply
    73,046.80x = 109,572.93 × 20,454.92
  4. Step 4: Simplify right side
    73,046.80x = 2,241,305,517.32
  5. Step 5: Solve for x
    x = 2,241,305,517.32/73,046.80
  6. Step 6: Final answer
    x = 30,683.14

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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.