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Finding the Third Proportional to 1,432 and 3,080

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Solution

The third proportional to 1,432 and 3,080 is: 6,624.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432 : 3,080 = 3,080 : x
  2. Step 2: Convert to fraction form
    1,432/3,080 = 3,080/x
  3. Step 3: Cross multiply
    1,432x = 3,080 × 3,080
  4. Step 4: Simplify right side
    1,432x = 9,486,400
  5. Step 5: Solve for x
    x = 9,486,400/1,432
  6. Step 6: Final answer
    x = 6,624.58

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.