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Finding the Third Proportional to 3,994 and 9,031

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Solution

The third proportional to 3,994 and 9,031 is: 20,420.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994 : 9,031 = 9,031 : x
  2. Step 2: Convert to fraction form
    3,994/9,031 = 9,031/x
  3. Step 3: Cross multiply
    3,994x = 9,031 × 9,031
  4. Step 4: Simplify right side
    3,994x = 81,558,961
  5. Step 5: Solve for x
    x = 81,558,961/3,994
  6. Step 6: Final answer
    x = 20,420.37

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Why These Related Problems?

These problems maintain the same ratio (2.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.