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Finding the Third Proportional to 4,248 and 9,147

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Solution

The third proportional to 4,248 and 9,147 is: 19,695.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,248 : 9,147 = 9,147 : x
  2. Step 2: Convert to fraction form
    4,248/9,147 = 9,147/x
  3. Step 3: Cross multiply
    4,248x = 9,147 × 9,147
  4. Step 4: Simplify right side
    4,248x = 83,667,609
  5. Step 5: Solve for x
    x = 83,667,609/4,248
  6. Step 6: Final answer
    x = 19,695.76

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.