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Finding the Fourth Proportional to 198,188.27, 297,327.81 and 85,887.33

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Solution

The fourth proportional to 198,188.27, 297,327.81 and 85,887.33 is: 128,850.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,188.27 : 297,327.81 = 85,887.33 : x
  2. Step 2: Convert to fraction form
    198,188.27/297,327.81 = 85,887.33/x
  3. Step 3: Cross multiply
    198,188.27x = 297,327.81 × 85,887.33
  4. Step 4: Simplify right side
    198,188.27x = 25,536,691,735.65
  5. Step 5: Solve for x
    x = 25,536,691,735.65/198,188.27
  6. Step 6: Final answer
    x = 128,850.67

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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.