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Finding the Third Proportional to 167 and 261.38

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Solution

The third proportional to 167 and 261.38 is: 409.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    167 : 261.38 = 261.38 : x
  2. Step 2: Convert to fraction form
    167/261.38 = 261.38/x
  3. Step 3: Cross multiply
    167x = 261.38 × 261.38
  4. Step 4: Simplify right side
    167x = 68,316.89
  5. Step 5: Solve for x
    x = 68,316.89/167
  6. Step 6: Final answer
    x = 409.08

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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.