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Finding the Third Proportional to 4,090 and 5,739

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Solution

The third proportional to 4,090 and 5,739 is: 8,052.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090 : 5,739 = 5,739 : x
  2. Step 2: Convert to fraction form
    4,090/5,739 = 5,739/x
  3. Step 3: Cross multiply
    4,090x = 5,739 × 5,739
  4. Step 4: Simplify right side
    4,090x = 32,936,121
  5. Step 5: Solve for x
    x = 32,936,121/4,090
  6. Step 6: Final answer
    x = 8,052.84

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.