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Finding the Third Proportional to 2,691 and 4,045.50

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Solution

The third proportional to 2,691 and 4,045.50 is: 6,081.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691 : 4,045.50 = 4,045.50 : x
  2. Step 2: Convert to fraction form
    2,691/4,045.50 = 4,045.50/x
  3. Step 3: Cross multiply
    2,691x = 4,045.50 × 4,045.50
  4. Step 4: Simplify right side
    2,691x = 16,366,070.25
  5. Step 5: Solve for x
    x = 16,366,070.25/2,691
  6. Step 6: Final answer
    x = 6,081.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.