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Finding the Fourth Proportional to 248,661.18, 372,991.43 and 115,468.61

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Solution

The fourth proportional to 248,661.18, 372,991.43 and 115,468.61 is: 173,202.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,661.18 : 372,991.43 = 115,468.61 : x
  2. Step 2: Convert to fraction form
    248,661.18/372,991.43 = 115,468.61/x
  3. Step 3: Cross multiply
    248,661.18x = 372,991.43 × 115,468.61
  4. Step 4: Simplify right side
    248,661.18x = 43,068,800,387.73
  5. Step 5: Solve for x
    x = 43,068,800,387.73/248,661.18
  6. Step 6: Final answer
    x = 173,202.75

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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.