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Finding the Third Proportional to 3,936 and 5,024

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Solution

The third proportional to 3,936 and 5,024 is: 6,412.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936 : 5,024 = 5,024 : x
  2. Step 2: Convert to fraction form
    3,936/5,024 = 5,024/x
  3. Step 3: Cross multiply
    3,936x = 5,024 × 5,024
  4. Step 4: Simplify right side
    3,936x = 25,240,576
  5. Step 5: Solve for x
    x = 25,240,576/3,936
  6. Step 6: Final answer
    x = 6,412.75

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.