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Finding the Fourth Proportional to 11,894.52, 17,869.13 and 8,392.59

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Solution

The fourth proportional to 11,894.52, 17,869.13 and 8,392.59 is: 12,608.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,894.52 : 17,869.13 = 8,392.59 : x
  2. Step 2: Convert to fraction form
    11,894.52/17,869.13 = 8,392.59/x
  3. Step 3: Cross multiply
    11,894.52x = 17,869.13 × 8,392.59
  4. Step 4: Simplify right side
    11,894.52x = 149,968,239.78
  5. Step 5: Solve for x
    x = 149,968,239.78/11,894.52
  6. Step 6: Final answer
    x = 12,608.18

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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.