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Finding the Third Proportional to 2,171.81 and 2,926.13

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Solution

The third proportional to 2,171.81 and 2,926.13 is: 3,942.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.81 : 2,926.13 = 2,926.13 : x
  2. Step 2: Convert to fraction form
    2,171.81/2,926.13 = 2,926.13/x
  3. Step 3: Cross multiply
    2,171.81x = 2,926.13 × 2,926.13
  4. Step 4: Simplify right side
    2,171.81x = 8,562,207.52
  5. Step 5: Solve for x
    x = 8,562,207.52/2,171.81
  6. Step 6: Final answer
    x = 3,942.42

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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.