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Finding the Fourth Proportional to 18,793.62, 28,189.62 and 7,696.62

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Solution

The fourth proportional to 18,793.62, 28,189.62 and 7,696.62 is: 11,544.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.62 : 28,189.62 = 7,696.62 : x
  2. Step 2: Convert to fraction form
    18,793.62/28,189.62 = 7,696.62/x
  3. Step 3: Cross multiply
    18,793.62x = 28,189.62 × 7,696.62
  4. Step 4: Simplify right side
    18,793.62x = 216,964,793.08
  5. Step 5: Solve for x
    x = 216,964,793.08/18,793.62
  6. Step 6: Final answer
    x = 11,544.60

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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.