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Finding the Fourth Proportional to 206,974.80, 310,462.20 and 73,859.40

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Solution

The fourth proportional to 206,974.80, 310,462.20 and 73,859.40 is: 110,789.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,974.80 : 310,462.20 = 73,859.40 : x
  2. Step 2: Convert to fraction form
    206,974.80/310,462.20 = 73,859.40/x
  3. Step 3: Cross multiply
    206,974.80x = 310,462.20 × 73,859.40
  4. Step 4: Simplify right side
    206,974.80x = 22,930,551,814.68
  5. Step 5: Solve for x
    x = 22,930,551,814.68/206,974.80
  6. Step 6: Final answer
    x = 110,789.10

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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.