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Finding the Fourth Proportional to 250,990.54, 376,635.41 and 91,078.95

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Solution

The fourth proportional to 250,990.54, 376,635.41 and 91,078.95 is: 136,672.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,990.54 : 376,635.41 = 91,078.95 : x
  2. Step 2: Convert to fraction form
    250,990.54/376,635.41 = 91,078.95/x
  3. Step 3: Cross multiply
    250,990.54x = 376,635.41 × 91,078.95
  4. Step 4: Simplify right side
    250,990.54x = 34,303,557,220.22
  5. Step 5: Solve for x
    x = 34,303,557,220.22/250,990.54
  6. Step 6: Final answer
    x = 136,672.71

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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.