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Finding the Fourth Proportional to 18,792.39, 28,190.43 and 6,949.26

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Solution

The fourth proportional to 18,792.39, 28,190.43 and 6,949.26 is: 10,424.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.39 : 28,190.43 = 6,949.26 : x
  2. Step 2: Convert to fraction form
    18,792.39/28,190.43 = 6,949.26/x
  3. Step 3: Cross multiply
    18,792.39x = 28,190.43 × 6,949.26
  4. Step 4: Simplify right side
    18,792.39x = 195,902,627.58
  5. Step 5: Solve for x
    x = 195,902,627.58/18,792.39
  6. Step 6: Final answer
    x = 10,424.57

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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.