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Finding the Fourth Proportional to 18,808.26, 28,196.98 and 9,436.96

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Solution

The fourth proportional to 18,808.26, 28,196.98 and 9,436.96 is: 14,147.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.26 : 28,196.98 = 9,436.96 : x
  2. Step 2: Convert to fraction form
    18,808.26/28,196.98 = 9,436.96/x
  3. Step 3: Cross multiply
    18,808.26x = 28,196.98 × 9,436.96
  4. Step 4: Simplify right side
    18,808.26x = 266,093,772.38
  5. Step 5: Solve for x
    x = 266,093,772.38/18,808.26
  6. Step 6: Final answer
    x = 14,147.71

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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.