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Finding the Fourth Proportional to 73,230.36, 109,771.68 and 28,839.96

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Solution

The fourth proportional to 73,230.36, 109,771.68 and 28,839.96 is: 43,230.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,230.36 : 109,771.68 = 28,839.96 : x
  2. Step 2: Convert to fraction form
    73,230.36/109,771.68 = 28,839.96/x
  3. Step 3: Cross multiply
    73,230.36x = 109,771.68 × 28,839.96
  4. Step 4: Simplify right side
    73,230.36x = 3,165,810,860.33
  5. Step 5: Solve for x
    x = 3,165,810,860.33/73,230.36
  6. Step 6: Final answer
    x = 43,230.85

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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.