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Finding the Third Proportional to 3,470 and 5,393

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Solution

The third proportional to 3,470 and 5,393 is: 8,381.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,470 : 5,393 = 5,393 : x
  2. Step 2: Convert to fraction form
    3,470/5,393 = 5,393/x
  3. Step 3: Cross multiply
    3,470x = 5,393 × 5,393
  4. Step 4: Simplify right side
    3,470x = 29,084,449
  5. Step 5: Solve for x
    x = 29,084,449/3,470
  6. Step 6: Final answer
    x = 8,381.69

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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.