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Finding the Fourth Proportional to 18,396.11, 27,598.92 and 5,917.91

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Solution

The fourth proportional to 18,396.11, 27,598.92 and 5,917.91 is: 8,878.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396.11 : 27,598.92 = 5,917.91 : x
  2. Step 2: Convert to fraction form
    18,396.11/27,598.92 = 5,917.91/x
  3. Step 3: Cross multiply
    18,396.11x = 27,598.92 × 5,917.91
  4. Step 4: Simplify right side
    18,396.11x = 163,327,924.66
  5. Step 5: Solve for x
    x = 163,327,924.66/18,396.11
  6. Step 6: Final answer
    x = 8,878.39

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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.