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Finding the Third Proportional to 1,999.69 and 4,363.88

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Solution

The third proportional to 1,999.69 and 4,363.88 is: 9,523.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.69 : 4,363.88 = 4,363.88 : x
  2. Step 2: Convert to fraction form
    1,999.69/4,363.88 = 4,363.88/x
  3. Step 3: Cross multiply
    1,999.69x = 4,363.88 × 4,363.88
  4. Step 4: Simplify right side
    1,999.69x = 19,043,405.02
  5. Step 5: Solve for x
    x = 19,043,405.02/1,999.69
  6. Step 6: Final answer
    x = 9,523.19

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.