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Finding the Fourth Proportional to 357,469.38, 536,203.74 and 91,229.86

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Solution

The fourth proportional to 357,469.38, 536,203.74 and 91,229.86 is: 136,844.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,469.38 : 536,203.74 = 91,229.86 : x
  2. Step 2: Convert to fraction form
    357,469.38/536,203.74 = 91,229.86/x
  3. Step 3: Cross multiply
    357,469.38x = 536,203.74 × 91,229.86
  4. Step 4: Simplify right side
    357,469.38x = 48,917,792,131.68
  5. Step 5: Solve for x
    x = 48,917,792,131.68/357,469.38
  6. Step 6: Final answer
    x = 136,844.71

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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.