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Finding the Third Proportional to 4,122 and 7,674

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Solution

The third proportional to 4,122 and 7,674 is: 14,286.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,122 : 7,674 = 7,674 : x
  2. Step 2: Convert to fraction form
    4,122/7,674 = 7,674/x
  3. Step 3: Cross multiply
    4,122x = 7,674 × 7,674
  4. Step 4: Simplify right side
    4,122x = 58,890,276
  5. Step 5: Solve for x
    x = 58,890,276/4,122
  6. Step 6: Final answer
    x = 14,286.82

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.