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Finding the Third Proportional to 994.78 and 2,164.22

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Solution

The third proportional to 994.78 and 2,164.22 is: 4,708.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.78 : 2,164.22 = 2,164.22 : x
  2. Step 2: Convert to fraction form
    994.78/2,164.22 = 2,164.22/x
  3. Step 3: Cross multiply
    994.78x = 2,164.22 × 2,164.22
  4. Step 4: Simplify right side
    994.78x = 4,683,842.80
  5. Step 5: Solve for x
    x = 4,683,842.80/994.78
  6. Step 6: Final answer
    x = 4,708.41

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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.