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Finding the Third Proportional to 3.96 and 4.26

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Solution

The third proportional to 3.96 and 4.26 is: 4.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.96 : 4.26 = 4.26 : x
  2. Step 2: Convert to fraction form
    3.96/4.26 = 4.26/x
  3. Step 3: Cross multiply
    3.96x = 4.26 × 4.26
  4. Step 4: Simplify right side
    3.96x = 18.17
  5. Step 5: Solve for x
    x = 18.17/3.96
  6. Step 6: Final answer
    x = 4.59

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.