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Finding the Fourth Proportional to 352,138.98, 485,951.04 and 190,993.20

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Solution

The fourth proportional to 352,138.98, 485,951.04 and 190,993.20 is: 263,570.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,138.98 : 485,951.04 = 190,993.20 : x
  2. Step 2: Convert to fraction form
    352,138.98/485,951.04 = 190,993.20/x
  3. Step 3: Cross multiply
    352,138.98x = 485,951.04 × 190,993.20
  4. Step 4: Simplify right side
    352,138.98x = 92,813,344,172.93
  5. Step 5: Solve for x
    x = 92,813,344,172.93/352,138.98
  6. Step 6: Final answer
    x = 263,570.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.