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Finding the Third Proportional to 7,078 and 12,626

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Solution

The third proportional to 7,078 and 12,626 is: 22,522.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,078 : 12,626 = 12,626 : x
  2. Step 2: Convert to fraction form
    7,078/12,626 = 12,626/x
  3. Step 3: Cross multiply
    7,078x = 12,626 × 12,626
  4. Step 4: Simplify right side
    7,078x = 159,415,876
  5. Step 5: Solve for x
    x = 159,415,876/7,078
  6. Step 6: Final answer
    x = 22,522.73

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.