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Finding the Third Proportional to 4,789.13 and 6,449.63

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Solution

The third proportional to 4,789.13 and 6,449.63 is: 8,685.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,789.13 : 6,449.63 = 6,449.63 : x
  2. Step 2: Convert to fraction form
    4,789.13/6,449.63 = 6,449.63/x
  3. Step 3: Cross multiply
    4,789.13x = 6,449.63 × 6,449.63
  4. Step 4: Simplify right side
    4,789.13x = 41,597,662.64
  5. Step 5: Solve for x
    x = 41,597,662.64/4,789.13
  6. Step 6: Final answer
    x = 8,685.86

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.