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Finding the Third Proportional to 4,626 and 7,122

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Solution

The third proportional to 4,626 and 7,122 is: 10,964.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,626 : 7,122 = 7,122 : x
  2. Step 2: Convert to fraction form
    4,626/7,122 = 7,122/x
  3. Step 3: Cross multiply
    4,626x = 7,122 × 7,122
  4. Step 4: Simplify right side
    4,626x = 50,722,884
  5. Step 5: Solve for x
    x = 50,722,884/4,626
  6. Step 6: Final answer
    x = 10,964.74

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.