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Finding the Fourth Proportional to 18,396.66, 27,586.65 and 5,245.98

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Solution

The fourth proportional to 18,396.66, 27,586.65 and 5,245.98 is: 7,866.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396.66 : 27,586.65 = 5,245.98 : x
  2. Step 2: Convert to fraction form
    18,396.66/27,586.65 = 5,245.98/x
  3. Step 3: Cross multiply
    18,396.66x = 27,586.65 × 5,245.98
  4. Step 4: Simplify right side
    18,396.66x = 144,719,014.17
  5. Step 5: Solve for x
    x = 144,719,014.17/18,396.66
  6. Step 6: Final answer
    x = 7,866.59

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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.