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Finding the Third Proportional to 4,396.78 and 9,612.42

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Solution

The third proportional to 4,396.78 and 9,612.42 is: 21,015.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,396.78 : 9,612.42 = 9,612.42 : x
  2. Step 2: Convert to fraction form
    4,396.78/9,612.42 = 9,612.42/x
  3. Step 3: Cross multiply
    4,396.78x = 9,612.42 × 9,612.42
  4. Step 4: Simplify right side
    4,396.78x = 92,398,654.30
  5. Step 5: Solve for x
    x = 92,398,654.30/4,396.78
  6. Step 6: Final answer
    x = 21,015.07

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.