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Finding the Fourth Proportional to 208,892.26, 313,308.33 and 66,753.73

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Solution

The fourth proportional to 208,892.26, 313,308.33 and 66,753.73 is: 100,120.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,892.26 : 313,308.33 = 66,753.73 : x
  2. Step 2: Convert to fraction form
    208,892.26/313,308.33 = 66,753.73/x
  3. Step 3: Cross multiply
    208,892.26x = 313,308.33 × 66,753.73
  4. Step 4: Simplify right side
    208,892.26x = 20,914,499,667.57
  5. Step 5: Solve for x
    x = 20,914,499,667.57/208,892.26
  6. Step 6: Final answer
    x = 100,120.99

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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.