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Finding the Third Proportional to 939 and 2,406

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Solution

The third proportional to 939 and 2,406 is: 6,164.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    939 : 2,406 = 2,406 : x
  2. Step 2: Convert to fraction form
    939/2,406 = 2,406/x
  3. Step 3: Cross multiply
    939x = 2,406 × 2,406
  4. Step 4: Simplify right side
    939x = 5,788,836
  5. Step 5: Solve for x
    x = 5,788,836/939
  6. Step 6: Final answer
    x = 6,164.89

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Why These Related Problems?

These problems maintain the same ratio (2.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.