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Finding the Third Proportional to 986.06 and 2,151

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Solution

The third proportional to 986.06 and 2,151 is: 4,692.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    986.06 : 2,151 = 2,151 : x
  2. Step 2: Convert to fraction form
    986.06/2,151 = 2,151/x
  3. Step 3: Cross multiply
    986.06x = 2,151 × 2,151
  4. Step 4: Simplify right side
    986.06x = 4,626,801
  5. Step 5: Solve for x
    x = 4,626,801/986.06
  6. Step 6: Final answer
    x = 4,692.20

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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.