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Finding the Fourth Proportional to 18,399.92, 27,599.76 and 11,006.44

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Solution

The fourth proportional to 18,399.92, 27,599.76 and 11,006.44 is: 16,509.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,399.92 : 27,599.76 = 11,006.44 : x
  2. Step 2: Convert to fraction form
    18,399.92/27,599.76 = 11,006.44/x
  3. Step 3: Cross multiply
    18,399.92x = 27,599.76 × 11,006.44
  4. Step 4: Simplify right side
    18,399.92x = 303,775,033.46
  5. Step 5: Solve for x
    x = 303,775,033.46/18,399.92
  6. Step 6: Final answer
    x = 16,509.59

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1.5x scale

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.