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Finding the Third Proportional to 6,936 and 9,621

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Solution

The third proportional to 6,936 and 9,621 is: 13,345.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,936 : 9,621 = 9,621 : x
  2. Step 2: Convert to fraction form
    6,936/9,621 = 9,621/x
  3. Step 3: Cross multiply
    6,936x = 9,621 × 9,621
  4. Step 4: Simplify right side
    6,936x = 92,563,641
  5. Step 5: Solve for x
    x = 92,563,641/6,936
  6. Step 6: Final answer
    x = 13,345.39

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.