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Finding the Third Proportional to 62.94 and 84.25

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Solution

The third proportional to 62.94 and 84.25 is: 112.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.94 : 84.25 = 84.25 : x
  2. Step 2: Convert to fraction form
    62.94/84.25 = 84.25/x
  3. Step 3: Cross multiply
    62.94x = 84.25 × 84.25
  4. Step 4: Simplify right side
    62.94x = 7,098.06
  5. Step 5: Solve for x
    x = 7,098.06/62.94
  6. Step 6: Final answer
    x = 112.78

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.