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Finding the Third Proportional to 5,742 and 13,791

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Solution

The third proportional to 5,742 and 13,791 is: 33,122.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,742 : 13,791 = 13,791 : x
  2. Step 2: Convert to fraction form
    5,742/13,791 = 13,791/x
  3. Step 3: Cross multiply
    5,742x = 13,791 × 13,791
  4. Step 4: Simplify right side
    5,742x = 190,191,681
  5. Step 5: Solve for x
    x = 190,191,681/5,742
  6. Step 6: Final answer
    x = 33,122.90

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Why These Related Problems?

These problems maintain the same ratio (2.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.