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Finding the Third Proportional to 4,992 and 9,648

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Solution

The third proportional to 4,992 and 9,648 is: 18,646.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,992 : 9,648 = 9,648 : x
  2. Step 2: Convert to fraction form
    4,992/9,648 = 9,648/x
  3. Step 3: Cross multiply
    4,992x = 9,648 × 9,648
  4. Step 4: Simplify right side
    4,992x = 93,083,904
  5. Step 5: Solve for x
    x = 93,083,904/4,992
  6. Step 6: Final answer
    x = 18,646.62

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Why These Related Problems?

These problems maintain the same ratio (1.93) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.