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Finding the Fourth Proportional to 445,763.73, 668,747.58 and 193,086.28

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Solution

The fourth proportional to 445,763.73, 668,747.58 and 193,086.28 is: 289,673.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,763.73 : 668,747.58 = 193,086.28 : x
  2. Step 2: Convert to fraction form
    445,763.73/668,747.58 = 193,086.28/x
  3. Step 3: Cross multiply
    445,763.73x = 668,747.58 × 193,086.28
  4. Step 4: Simplify right side
    445,763.73x = 129,125,982,481.20
  5. Step 5: Solve for x
    x = 129,125,982,481.20/445,763.73
  6. Step 6: Final answer
    x = 289,673.60

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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.