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Finding the Third Proportional to 1,571 and 3,391

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Solution

The third proportional to 1,571 and 3,391 is: 7,319.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571 : 3,391 = 3,391 : x
  2. Step 2: Convert to fraction form
    1,571/3,391 = 3,391/x
  3. Step 3: Cross multiply
    1,571x = 3,391 × 3,391
  4. Step 4: Simplify right side
    1,571x = 11,498,881
  5. Step 5: Solve for x
    x = 11,498,881/1,571
  6. Step 6: Final answer
    x = 7,319.47

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.