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Finding the Third Proportional to 5,408 and 7,110

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Solution

The third proportional to 5,408 and 7,110 is: 9,347.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408 : 7,110 = 7,110 : x
  2. Step 2: Convert to fraction form
    5,408/7,110 = 7,110/x
  3. Step 3: Cross multiply
    5,408x = 7,110 × 7,110
  4. Step 4: Simplify right side
    5,408x = 50,552,100
  5. Step 5: Solve for x
    x = 50,552,100/5,408
  6. Step 6: Final answer
    x = 9,347.65

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.