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Finding the Third Proportional to 2,721 and 4,070

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Solution

The third proportional to 2,721 and 4,070 is: 6,087.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721 : 4,070 = 4,070 : x
  2. Step 2: Convert to fraction form
    2,721/4,070 = 4,070/x
  3. Step 3: Cross multiply
    2,721x = 4,070 × 4,070
  4. Step 4: Simplify right side
    2,721x = 16,564,900
  5. Step 5: Solve for x
    x = 16,564,900/2,721
  6. Step 6: Final answer
    x = 6,087.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.