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Finding the Third Proportional to 3,356 and 5,122

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Solution

The third proportional to 3,356 and 5,122 is: 7,817.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,356 : 5,122 = 5,122 : x
  2. Step 2: Convert to fraction form
    3,356/5,122 = 5,122/x
  3. Step 3: Cross multiply
    3,356x = 5,122 × 5,122
  4. Step 4: Simplify right side
    3,356x = 26,234,884
  5. Step 5: Solve for x
    x = 26,234,884/3,356
  6. Step 6: Final answer
    x = 7,817.31

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.