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Finding the Third Proportional to 3,960 and 4,681

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Solution

The third proportional to 3,960 and 4,681 is: 5,533.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960 : 4,681 = 4,681 : x
  2. Step 2: Convert to fraction form
    3,960/4,681 = 4,681/x
  3. Step 3: Cross multiply
    3,960x = 4,681 × 4,681
  4. Step 4: Simplify right side
    3,960x = 21,911,761
  5. Step 5: Solve for x
    x = 21,911,761/3,960
  6. Step 6: Final answer
    x = 5,533.27

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.