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Finding the Fourth Proportional to 105,836.44, 158,671.43 and 72,455.33

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Solution

The fourth proportional to 105,836.44, 158,671.43 and 72,455.33 is: 108,626.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,836.44 : 158,671.43 = 72,455.33 : x
  2. Step 2: Convert to fraction form
    105,836.44/158,671.43 = 72,455.33/x
  3. Step 3: Cross multiply
    105,836.44x = 158,671.43 × 72,455.33
  4. Step 4: Simplify right side
    105,836.44x = 11,496,589,847.73
  5. Step 5: Solve for x
    x = 11,496,589,847.73/105,836.44
  6. Step 6: Final answer
    x = 108,626.01

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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.