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Finding the Third Proportional to 168.38 and 252.50

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Solution

The third proportional to 168.38 and 252.50 is: 378.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.38 : 252.50 = 252.50 : x
  2. Step 2: Convert to fraction form
    168.38/252.50 = 252.50/x
  3. Step 3: Cross multiply
    168.38x = 252.50 × 252.50
  4. Step 4: Simplify right side
    168.38x = 63,756.25
  5. Step 5: Solve for x
    x = 63,756.25/168.38
  6. Step 6: Final answer
    x = 378.66

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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.