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Finding the Fourth Proportional to 226,607.20, 339,910.80 and 121,631.20

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Solution

The fourth proportional to 226,607.20, 339,910.80 and 121,631.20 is: 182,446.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,607.20 : 339,910.80 = 121,631.20 : x
  2. Step 2: Convert to fraction form
    226,607.20/339,910.80 = 121,631.20/x
  3. Step 3: Cross multiply
    226,607.20x = 339,910.80 × 121,631.20
  4. Step 4: Simplify right side
    226,607.20x = 41,343,758,496.96
  5. Step 5: Solve for x
    x = 41,343,758,496.96/226,607.20
  6. Step 6: Final answer
    x = 182,446.80

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1.5x scale

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.