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Finding the Third Proportional to 5,090 and 7,651

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Solution

The third proportional to 5,090 and 7,651 is: 11,500.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,090 : 7,651 = 7,651 : x
  2. Step 2: Convert to fraction form
    5,090/7,651 = 7,651/x
  3. Step 3: Cross multiply
    5,090x = 7,651 × 7,651
  4. Step 4: Simplify right side
    5,090x = 58,537,801
  5. Step 5: Solve for x
    x = 58,537,801/5,090
  6. Step 6: Final answer
    x = 11,500.55

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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.