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Finding the Third Proportional to 995 and 2,170

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Solution

The third proportional to 995 and 2,170 is: 4,732.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    995 : 2,170 = 2,170 : x
  2. Step 2: Convert to fraction form
    995/2,170 = 2,170/x
  3. Step 3: Cross multiply
    995x = 2,170 × 2,170
  4. Step 4: Simplify right side
    995x = 4,708,900
  5. Step 5: Solve for x
    x = 4,708,900/995
  6. Step 6: Final answer
    x = 4,732.56

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.