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Finding the Fourth Proportional to 251,138.25, 376,387.02 and 117,724.59

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Solution

The fourth proportional to 251,138.25, 376,387.02 and 117,724.59 is: 176,436.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,138.25 : 376,387.02 = 117,724.59 : x
  2. Step 2: Convert to fraction form
    251,138.25/376,387.02 = 117,724.59/x
  3. Step 3: Cross multiply
    251,138.25x = 376,387.02 × 117,724.59
  4. Step 4: Simplify right side
    251,138.25x = 44,310,007,610.82
  5. Step 5: Solve for x
    x = 44,310,007,610.82/251,138.25
  6. Step 6: Final answer
    x = 176,436.71

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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.