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Finding the Fourth Proportional to 18,794.67, 28,192.20 and 7,693.62

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Solution

The fourth proportional to 18,794.67, 28,192.20 and 7,693.62 is: 11,540.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,794.67 : 28,192.20 = 7,693.62 : x
  2. Step 2: Convert to fraction form
    18,794.67/28,192.20 = 7,693.62/x
  3. Step 3: Cross multiply
    18,794.67x = 28,192.20 × 7,693.62
  4. Step 4: Simplify right side
    18,794.67x = 216,900,073.76
  5. Step 5: Solve for x
    x = 216,900,073.76/18,794.67
  6. Step 6: Final answer
    x = 11,540.51

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Double scale
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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.