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Finding the Third Proportional to 1,988 and 2,654

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Solution

The third proportional to 1,988 and 2,654 is: 3,543.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988 : 2,654 = 2,654 : x
  2. Step 2: Convert to fraction form
    1,988/2,654 = 2,654/x
  3. Step 3: Cross multiply
    1,988x = 2,654 × 2,654
  4. Step 4: Simplify right side
    1,988x = 7,043,716
  5. Step 5: Solve for x
    x = 7,043,716/1,988
  6. Step 6: Final answer
    x = 3,543.12

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.