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Finding the Fourth Proportional to 73,108.20, 109,791.90 and 56,508.60

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Solution

The fourth proportional to 73,108.20, 109,791.90 and 56,508.60 is: 84,863.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,108.20 : 109,791.90 = 56,508.60 : x
  2. Step 2: Convert to fraction form
    73,108.20/109,791.90 = 56,508.60/x
  3. Step 3: Cross multiply
    73,108.20x = 109,791.90 × 56,508.60
  4. Step 4: Simplify right side
    73,108.20x = 6,204,186,560.34
  5. Step 5: Solve for x
    x = 6,204,186,560.34/73,108.20
  6. Step 6: Final answer
    x = 84,863.07

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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.