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Finding the Fourth Proportional to 73,230.44, 109,770.24 and 28,839.20

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Solution

The fourth proportional to 73,230.44, 109,770.24 and 28,839.20 is: 43,229.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,230.44 : 109,770.24 = 28,839.20 : x
  2. Step 2: Convert to fraction form
    73,230.44/109,770.24 = 28,839.20/x
  3. Step 3: Cross multiply
    73,230.44x = 109,770.24 × 28,839.20
  4. Step 4: Simplify right side
    73,230.44x = 3,165,685,905.41
  5. Step 5: Solve for x
    x = 3,165,685,905.41/73,230.44
  6. Step 6: Final answer
    x = 43,229.10

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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.