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Finding the Fourth Proportional to 18,468.62, 27,702.20 and 7,371.98

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Solution

The fourth proportional to 18,468.62, 27,702.20 and 7,371.98 is: 11,057.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,468.62 : 27,702.20 = 7,371.98 : x
  2. Step 2: Convert to fraction form
    18,468.62/27,702.20 = 7,371.98/x
  3. Step 3: Cross multiply
    18,468.62x = 27,702.20 × 7,371.98
  4. Step 4: Simplify right side
    18,468.62x = 204,219,944.27
  5. Step 5: Solve for x
    x = 204,219,944.27/18,468.62
  6. Step 6: Final answer
    x = 11,057.68

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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.