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Finding the Third Proportional to 4,979.81 and 10,486.13

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Solution

The third proportional to 4,979.81 and 10,486.13 is: 22,080.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.81 : 10,486.13 = 10,486.13 : x
  2. Step 2: Convert to fraction form
    4,979.81/10,486.13 = 10,486.13/x
  3. Step 3: Cross multiply
    4,979.81x = 10,486.13 × 10,486.13
  4. Step 4: Simplify right side
    4,979.81x = 109,958,817.52
  5. Step 5: Solve for x
    x = 109,958,817.52/4,979.81
  6. Step 6: Final answer
    x = 22,080.92

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.