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Finding the Third Proportional to 3,612 and 5,160

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Solution

The third proportional to 3,612 and 5,160 is: 7,371.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612 : 5,160 = 5,160 : x
  2. Step 2: Convert to fraction form
    3,612/5,160 = 5,160/x
  3. Step 3: Cross multiply
    3,612x = 5,160 × 5,160
  4. Step 4: Simplify right side
    3,612x = 26,625,600
  5. Step 5: Solve for x
    x = 26,625,600/3,612
  6. Step 6: Final answer
    x = 7,371.43

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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.