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Finding the Third Proportional to 82.82 and 178.14

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Solution

The third proportional to 82.82 and 178.14 is: 383.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.82 : 178.14 = 178.14 : x
  2. Step 2: Convert to fraction form
    82.82/178.14 = 178.14/x
  3. Step 3: Cross multiply
    82.82x = 178.14 × 178.14
  4. Step 4: Simplify right side
    82.82x = 31,732.69
  5. Step 5: Solve for x
    x = 31,732.69/82.82
  6. Step 6: Final answer
    x = 383.16

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.