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Finding the Third Proportional to 3,079 and 4,894

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Solution

The third proportional to 3,079 and 4,894 is: 7,778.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079 : 4,894 = 4,894 : x
  2. Step 2: Convert to fraction form
    3,079/4,894 = 4,894/x
  3. Step 3: Cross multiply
    3,079x = 4,894 × 4,894
  4. Step 4: Simplify right side
    3,079x = 23,951,236
  5. Step 5: Solve for x
    x = 23,951,236/3,079
  6. Step 6: Final answer
    x = 7,778.90

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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.