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Finding the Fourth Proportional to 11,794.40, 17,691.78 and 4,003.40

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Solution

The fourth proportional to 11,794.40, 17,691.78 and 4,003.40 is: 6,005.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,794.40 : 17,691.78 = 4,003.40 : x
  2. Step 2: Convert to fraction form
    11,794.40/17,691.78 = 4,003.40/x
  3. Step 3: Cross multiply
    11,794.40x = 17,691.78 × 4,003.40
  4. Step 4: Simplify right side
    11,794.40x = 70,827,272.05
  5. Step 5: Solve for x
    x = 70,827,272.05/11,794.40
  6. Step 6: Final answer
    x = 6,005.16

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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.