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Finding the Third Proportional to 3,992 and 4,724

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Solution

The third proportional to 3,992 and 4,724 is: 5,590.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992 : 4,724 = 4,724 : x
  2. Step 2: Convert to fraction form
    3,992/4,724 = 4,724/x
  3. Step 3: Cross multiply
    3,992x = 4,724 × 4,724
  4. Step 4: Simplify right side
    3,992x = 22,316,176
  5. Step 5: Solve for x
    x = 22,316,176/3,992
  6. Step 6: Final answer
    x = 5,590.22

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.