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Finding the Third Proportional to 5,105 and 7,293

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Solution

The third proportional to 5,105 and 7,293 is: 10,418.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105 : 7,293 = 7,293 : x
  2. Step 2: Convert to fraction form
    5,105/7,293 = 7,293/x
  3. Step 3: Cross multiply
    5,105x = 7,293 × 7,293
  4. Step 4: Simplify right side
    5,105x = 53,187,849
  5. Step 5: Solve for x
    x = 53,187,849/5,105
  6. Step 6: Final answer
    x = 10,418.78

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.