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Finding the Third Proportional to 26 and 28.38

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Solution

The third proportional to 26 and 28.38 is: 30.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    26 : 28.38 = 28.38 : x
  2. Step 2: Convert to fraction form
    26/28.38 = 28.38/x
  3. Step 3: Cross multiply
    26x = 28.38 × 28.38
  4. Step 4: Simplify right side
    26x = 805.14
  5. Step 5: Solve for x
    x = 805.14/26
  6. Step 6: Final answer
    x = 30.97

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.