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Finding the Fourth Proportional to 251,003.88, 376,510.32 and 91,193.31

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Solution

The fourth proportional to 251,003.88, 376,510.32 and 91,193.31 is: 136,791.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,003.88 : 376,510.32 = 91,193.31 : x
  2. Step 2: Convert to fraction form
    251,003.88/376,510.32 = 91,193.31/x
  3. Step 3: Cross multiply
    251,003.88x = 376,510.32 × 91,193.31
  4. Step 4: Simplify right side
    251,003.88x = 34,335,221,873.99
  5. Step 5: Solve for x
    x = 34,335,221,873.99/251,003.88
  6. Step 6: Final answer
    x = 136,791.60

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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.