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Finding the Fourth Proportional to 227,057.20, 339,929.70 and 220,496.20

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Solution

The fourth proportional to 227,057.20, 339,929.70 and 220,496.20 is: 330,107.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,057.20 : 339,929.70 = 220,496.20 : x
  2. Step 2: Convert to fraction form
    227,057.20/339,929.70 = 220,496.20/x
  3. Step 3: Cross multiply
    227,057.20x = 339,929.70 × 220,496.20
  4. Step 4: Simplify right side
    227,057.20x = 74,953,207,117.14
  5. Step 5: Solve for x
    x = 74,953,207,117.14/227,057.20
  6. Step 6: Final answer
    x = 330,107.16

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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.