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Finding the Third Proportional to 1,692 and 2,742.75

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Solution

The third proportional to 1,692 and 2,742.75 is: 4,446.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692 : 2,742.75 = 2,742.75 : x
  2. Step 2: Convert to fraction form
    1,692/2,742.75 = 2,742.75/x
  3. Step 3: Cross multiply
    1,692x = 2,742.75 × 2,742.75
  4. Step 4: Simplify right side
    1,692x = 7,522,677.56
  5. Step 5: Solve for x
    x = 7,522,677.56/1,692
  6. Step 6: Final answer
    x = 4,446.03

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Why These Related Problems?

These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.