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Finding the Third Proportional to 829.69 and 1,908.84

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Solution

The third proportional to 829.69 and 1,908.84 is: 4,391.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    829.69 : 1,908.84 = 1,908.84 : x
  2. Step 2: Convert to fraction form
    829.69/1,908.84 = 1,908.84/x
  3. Step 3: Cross multiply
    829.69x = 1,908.84 × 1,908.84
  4. Step 4: Simplify right side
    829.69x = 3,643,684.46
  5. Step 5: Solve for x
    x = 3,643,684.46/829.69
  6. Step 6: Final answer
    x = 4,391.63

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.