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Finding the Third Proportional to 2,942 and 4,717

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Solution

The third proportional to 2,942 and 4,717 is: 7,562.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,942 : 4,717 = 4,717 : x
  2. Step 2: Convert to fraction form
    2,942/4,717 = 4,717/x
  3. Step 3: Cross multiply
    2,942x = 4,717 × 4,717
  4. Step 4: Simplify right side
    2,942x = 22,250,089
  5. Step 5: Solve for x
    x = 22,250,089/2,942
  6. Step 6: Final answer
    x = 7,562.91

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.