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Finding the Fourth Proportional to 73,249.40, 109,874.10 and 43,311.80

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Solution

The fourth proportional to 73,249.40, 109,874.10 and 43,311.80 is: 64,967.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,249.40 : 109,874.10 = 43,311.80 : x
  2. Step 2: Convert to fraction form
    73,249.40/109,874.10 = 43,311.80/x
  3. Step 3: Cross multiply
    73,249.40x = 109,874.10 × 43,311.80
  4. Step 4: Simplify right side
    73,249.40x = 4,758,845,044.38
  5. Step 5: Solve for x
    x = 4,758,845,044.38/73,249.40
  6. Step 6: Final answer
    x = 64,967.70

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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.