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Finding the Fourth Proportional to 18,792.33, 28,186.26 and 4,942.41

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Solution

The fourth proportional to 18,792.33, 28,186.26 and 4,942.41 is: 7,413.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.33 : 28,186.26 = 4,942.41 : x
  2. Step 2: Convert to fraction form
    18,792.33/28,186.26 = 4,942.41/x
  3. Step 3: Cross multiply
    18,792.33x = 28,186.26 × 4,942.41
  4. Step 4: Simplify right side
    18,792.33x = 139,308,028.57
  5. Step 5: Solve for x
    x = 139,308,028.57/18,792.33
  6. Step 6: Final answer
    x = 7,413.03

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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.