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Finding the Fourth Proportional to 250,991.54, 376,636.91 and 91,079.95

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Solution

The fourth proportional to 250,991.54, 376,636.91 and 91,079.95 is: 136,674.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,991.54 : 376,636.91 = 91,079.95 : x
  2. Step 2: Convert to fraction form
    250,991.54/376,636.91 = 91,079.95/x
  3. Step 3: Cross multiply
    250,991.54x = 376,636.91 × 91,079.95
  4. Step 4: Simplify right side
    250,991.54x = 34,304,070,930.95
  5. Step 5: Solve for x
    x = 34,304,070,930.95/250,991.54
  6. Step 6: Final answer
    x = 136,674.21

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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.