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Finding the Fourth Proportional to 100,644.36, 150,879.78 and 41,443.08

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Solution

The fourth proportional to 100,644.36, 150,879.78 and 41,443.08 is: 62,128.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,644.36 : 150,879.78 = 41,443.08 : x
  2. Step 2: Convert to fraction form
    100,644.36/150,879.78 = 41,443.08/x
  3. Step 3: Cross multiply
    100,644.36x = 150,879.78 × 41,443.08
  4. Step 4: Simplify right side
    100,644.36x = 6,252,922,792.92
  5. Step 5: Solve for x
    x = 6,252,922,792.92/100,644.36
  6. Step 6: Final answer
    x = 62,128.89

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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.