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Finding the Fourth Proportional to 225,801.91, 338,639.67 and 68,007.43

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Solution

The fourth proportional to 225,801.91, 338,639.67 and 68,007.43 is: 101,992.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,801.91 : 338,639.67 = 68,007.43 : x
  2. Step 2: Convert to fraction form
    225,801.91/338,639.67 = 68,007.43/x
  3. Step 3: Cross multiply
    225,801.91x = 338,639.67 × 68,007.43
  4. Step 4: Simplify right side
    225,801.91x = 23,030,013,652.75
  5. Step 5: Solve for x
    x = 23,030,013,652.75/225,801.91
  6. Step 6: Final answer
    x = 101,992.11

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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.