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Finding the Third Proportional to 3,090 and 4,443

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Solution

The third proportional to 3,090 and 4,443 is: 6,388.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090 : 4,443 = 4,443 : x
  2. Step 2: Convert to fraction form
    3,090/4,443 = 4,443/x
  3. Step 3: Cross multiply
    3,090x = 4,443 × 4,443
  4. Step 4: Simplify right side
    3,090x = 19,740,249
  5. Step 5: Solve for x
    x = 19,740,249/3,090
  6. Step 6: Final answer
    x = 6,388.43

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.