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Finding the Third Proportional to 168.13 and 264.31

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Solution

The third proportional to 168.13 and 264.31 is: 415.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.13 : 264.31 = 264.31 : x
  2. Step 2: Convert to fraction form
    168.13/264.31 = 264.31/x
  3. Step 3: Cross multiply
    168.13x = 264.31 × 264.31
  4. Step 4: Simplify right side
    168.13x = 69,861.10
  5. Step 5: Solve for x
    x = 69,861.10/168.13
  6. Step 6: Final answer
    x = 415.53

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.