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Finding the Third Proportional to 3,871 and 5,473

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Solution

The third proportional to 3,871 and 5,473 is: 7,737.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871 : 5,473 = 5,473 : x
  2. Step 2: Convert to fraction form
    3,871/5,473 = 5,473/x
  3. Step 3: Cross multiply
    3,871x = 5,473 × 5,473
  4. Step 4: Simplify right side
    3,871x = 29,953,729
  5. Step 5: Solve for x
    x = 29,953,729/3,871
  6. Step 6: Final answer
    x = 7,737.98

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.