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Finding the Third Proportional to 2,473 and 3,930

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Solution

The third proportional to 2,473 and 3,930 is: 6,245.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,473 : 3,930 = 3,930 : x
  2. Step 2: Convert to fraction form
    2,473/3,930 = 3,930/x
  3. Step 3: Cross multiply
    2,473x = 3,930 × 3,930
  4. Step 4: Simplify right side
    2,473x = 15,444,900
  5. Step 5: Solve for x
    x = 15,444,900/2,473
  6. Step 6: Final answer
    x = 6,245.41

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.