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Finding the Third Proportional to 11,421 and 17,161.88

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Solution

The third proportional to 11,421 and 17,161.88 is: 25,788.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421 : 17,161.88 = 17,161.88 : x
  2. Step 2: Convert to fraction form
    11,421/17,161.88 = 17,161.88/x
  3. Step 3: Cross multiply
    11,421x = 17,161.88 × 17,161.88
  4. Step 4: Simplify right side
    11,421x = 294,529,953.52
  5. Step 5: Solve for x
    x = 294,529,953.52/11,421
  6. Step 6: Final answer
    x = 25,788.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.