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Finding the Fourth Proportional to 226,993.78, 340,489.77 and 69,221.78

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Solution

The fourth proportional to 226,993.78, 340,489.77 and 69,221.78 is: 103,832.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,993.78 : 340,489.77 = 69,221.78 : x
  2. Step 2: Convert to fraction form
    226,993.78/340,489.77 = 69,221.78/x
  3. Step 3: Cross multiply
    226,993.78x = 340,489.77 × 69,221.78
  4. Step 4: Simplify right side
    226,993.78x = 23,569,307,951.19
  5. Step 5: Solve for x
    x = 23,569,307,951.19/226,993.78
  6. Step 6: Final answer
    x = 103,832.40

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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.