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Finding the Third Proportional to 4,638.38 and 9,830.25

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Solution

The third proportional to 4,638.38 and 9,830.25 is: 20,833.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,638.38 : 9,830.25 = 9,830.25 : x
  2. Step 2: Convert to fraction form
    4,638.38/9,830.25 = 9,830.25/x
  3. Step 3: Cross multiply
    4,638.38x = 9,830.25 × 9,830.25
  4. Step 4: Simplify right side
    4,638.38x = 96,633,815.06
  5. Step 5: Solve for x
    x = 96,633,815.06/4,638.38
  6. Step 6: Final answer
    x = 20,833.55

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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.