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Finding the Third Proportional to 3,434 and 5,431

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Solution

The third proportional to 3,434 and 5,431 is: 8,589.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,434 : 5,431 = 5,431 : x
  2. Step 2: Convert to fraction form
    3,434/5,431 = 5,431/x
  3. Step 3: Cross multiply
    3,434x = 5,431 × 5,431
  4. Step 4: Simplify right side
    3,434x = 29,495,761
  5. Step 5: Solve for x
    x = 29,495,761/3,434
  6. Step 6: Final answer
    x = 8,589.33

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.