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Finding the Third Proportional to 3,145.50 and 4,941

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Solution

The third proportional to 3,145.50 and 4,941 is: 7,761.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.50 : 4,941 = 4,941 : x
  2. Step 2: Convert to fraction form
    3,145.50/4,941 = 4,941/x
  3. Step 3: Cross multiply
    3,145.50x = 4,941 × 4,941
  4. Step 4: Simplify right side
    3,145.50x = 24,413,481
  5. Step 5: Solve for x
    x = 24,413,481/3,145.50
  6. Step 6: Final answer
    x = 7,761.40

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.