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Finding the Third Proportional to 4,089 and 4,443

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Solution

The third proportional to 4,089 and 4,443 is: 4,827.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,089 : 4,443 = 4,443 : x
  2. Step 2: Convert to fraction form
    4,089/4,443 = 4,443/x
  3. Step 3: Cross multiply
    4,089x = 4,443 × 4,443
  4. Step 4: Simplify right side
    4,089x = 19,740,249
  5. Step 5: Solve for x
    x = 19,740,249/4,089
  6. Step 6: Final answer
    x = 4,827.65

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.