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Finding the Fourth Proportional to 18,450.99, 27,659.46 and 7,355

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Solution

The fourth proportional to 18,450.99, 27,659.46 and 7,355 is: 11,025.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,450.99 : 27,659.46 = 7,355 : x
  2. Step 2: Convert to fraction form
    18,450.99/27,659.46 = 7,355/x
  3. Step 3: Cross multiply
    18,450.99x = 27,659.46 × 7,355
  4. Step 4: Simplify right side
    18,450.99x = 203,435,328.30
  5. Step 5: Solve for x
    x = 203,435,328.30/18,450.99
  6. Step 6: Final answer
    x = 11,025.71

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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.