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Finding the Third Proportional to 3,924.50 and 8,644

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Solution

The third proportional to 3,924.50 and 8,644 is: 19,039.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.50 : 8,644 = 8,644 : x
  2. Step 2: Convert to fraction form
    3,924.50/8,644 = 8,644/x
  3. Step 3: Cross multiply
    3,924.50x = 8,644 × 8,644
  4. Step 4: Simplify right side
    3,924.50x = 74,718,736
  5. Step 5: Solve for x
    x = 74,718,736/3,924.50
  6. Step 6: Final answer
    x = 19,039.05

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.