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Finding the Fourth Proportional to 17,381.88, 23,987.18 and 10,212.09

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Solution

The fourth proportional to 17,381.88, 23,987.18 and 10,212.09 is: 14,092.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,381.88 : 23,987.18 = 10,212.09 : x
  2. Step 2: Convert to fraction form
    17,381.88/23,987.18 = 10,212.09/x
  3. Step 3: Cross multiply
    17,381.88x = 23,987.18 × 10,212.09
  4. Step 4: Simplify right side
    17,381.88x = 244,959,249.91
  5. Step 5: Solve for x
    x = 244,959,249.91/17,381.88
  6. Step 6: Final answer
    x = 14,092.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.