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Finding the Fourth Proportional to 73,215.54, 109,845.18 and 38,179.80

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Solution

The fourth proportional to 73,215.54, 109,845.18 and 38,179.80 is: 57,281.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,215.54 : 109,845.18 = 38,179.80 : x
  2. Step 2: Convert to fraction form
    73,215.54/109,845.18 = 38,179.80/x
  3. Step 3: Cross multiply
    73,215.54x = 109,845.18 × 38,179.80
  4. Step 4: Simplify right side
    73,215.54x = 4,193,867,003.36
  5. Step 5: Solve for x
    x = 4,193,867,003.36/73,215.54
  6. Step 6: Final answer
    x = 57,281.10

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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.