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Finding the Third Proportional to 4,644 and 9,828

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Solution

The third proportional to 4,644 and 9,828 is: 20,798.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,644 : 9,828 = 9,828 : x
  2. Step 2: Convert to fraction form
    4,644/9,828 = 9,828/x
  3. Step 3: Cross multiply
    4,644x = 9,828 × 9,828
  4. Step 4: Simplify right side
    4,644x = 96,589,584
  5. Step 5: Solve for x
    x = 96,589,584/4,644
  6. Step 6: Final answer
    x = 20,798.79

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.