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Finding the Fourth Proportional to 226,612.72, 339,834.60 and 66,645.80

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Solution

The fourth proportional to 226,612.72, 339,834.60 and 66,645.80 is: 99,943.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,612.72 : 339,834.60 = 66,645.80 : x
  2. Step 2: Convert to fraction form
    226,612.72/339,834.60 = 66,645.80/x
  3. Step 3: Cross multiply
    226,612.72x = 339,834.60 × 66,645.80
  4. Step 4: Simplify right side
    226,612.72x = 22,648,548,784.68
  5. Step 5: Solve for x
    x = 22,648,548,784.68/226,612.72
  6. Step 6: Final answer
    x = 99,943.85

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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.