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Finding the Third Proportional to 4,412 and 5,715

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Solution

The third proportional to 4,412 and 5,715 is: 7,402.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,412 : 5,715 = 5,715 : x
  2. Step 2: Convert to fraction form
    4,412/5,715 = 5,715/x
  3. Step 3: Cross multiply
    4,412x = 5,715 × 5,715
  4. Step 4: Simplify right side
    4,412x = 32,661,225
  5. Step 5: Solve for x
    x = 32,661,225/4,412
  6. Step 6: Final answer
    x = 7,402.82

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.