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Finding the Third Proportional to 4,119.28 and 6,383.72

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Solution

The third proportional to 4,119.28 and 6,383.72 is: 9,892.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,119.28 : 6,383.72 = 6,383.72 : x
  2. Step 2: Convert to fraction form
    4,119.28/6,383.72 = 6,383.72/x
  3. Step 3: Cross multiply
    4,119.28x = 6,383.72 × 6,383.72
  4. Step 4: Simplify right side
    4,119.28x = 40,751,865.08
  5. Step 5: Solve for x
    x = 40,751,865.08/4,119.28
  6. Step 6: Final answer
    x = 9,892.96

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.