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Finding the Third Proportional to 1,889.44 and 3,421.69

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Solution

The third proportional to 1,889.44 and 3,421.69 is: 6,196.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.44 : 3,421.69 = 3,421.69 : x
  2. Step 2: Convert to fraction form
    1,889.44/3,421.69 = 3,421.69/x
  3. Step 3: Cross multiply
    1,889.44x = 3,421.69 × 3,421.69
  4. Step 4: Simplify right side
    1,889.44x = 11,707,945.35
  5. Step 5: Solve for x
    x = 11,707,945.35/1,889.44
  6. Step 6: Final answer
    x = 6,196.52

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Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.