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Finding the Third Proportional to 3,431 and 5,124

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Solution

The third proportional to 3,431 and 5,124 is: 7,652.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431 : 5,124 = 5,124 : x
  2. Step 2: Convert to fraction form
    3,431/5,124 = 5,124/x
  3. Step 3: Cross multiply
    3,431x = 5,124 × 5,124
  4. Step 4: Simplify right side
    3,431x = 26,255,376
  5. Step 5: Solve for x
    x = 26,255,376/3,431
  6. Step 6: Final answer
    x = 7,652.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.