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Finding the Third Proportional to 167.25 and 394.75

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Solution

The third proportional to 167.25 and 394.75 is: 931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.25 : 394.75 = 394.75 : x
  2. Step 2: Convert to fraction form
    167.25/394.75 = 394.75/x
  3. Step 3: Cross multiply
    167.25x = 394.75 × 394.75
  4. Step 4: Simplify right side
    167.25x = 155,827.56
  5. Step 5: Solve for x
    x = 155,827.56/167.25
  6. Step 6: Final answer
    x = 931.70

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.