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Finding the Third Proportional to 4,061 and 5,421

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Solution

The third proportional to 4,061 and 5,421 is: 7,236.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,061 : 5,421 = 5,421 : x
  2. Step 2: Convert to fraction form
    4,061/5,421 = 5,421/x
  3. Step 3: Cross multiply
    4,061x = 5,421 × 5,421
  4. Step 4: Simplify right side
    4,061x = 29,387,241
  5. Step 5: Solve for x
    x = 29,387,241/4,061
  6. Step 6: Final answer
    x = 7,236.45

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.