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Finding the Third Proportional to 52.88 and 82.41

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Solution

The third proportional to 52.88 and 82.41 is: 128.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    52.88 : 82.41 = 82.41 : x
  2. Step 2: Convert to fraction form
    52.88/82.41 = 82.41/x
  3. Step 3: Cross multiply
    52.88x = 82.41 × 82.41
  4. Step 4: Simplify right side
    52.88x = 6,790.79
  5. Step 5: Solve for x
    x = 6,790.79/52.88
  6. Step 6: Final answer
    x = 128.43

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.