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Finding the Fourth Proportional to 248,697.15, 372,954.60 and 80,261.70

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Solution

The fourth proportional to 248,697.15, 372,954.60 and 80,261.70 is: 120,363.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,697.15 : 372,954.60 = 80,261.70 : x
  2. Step 2: Convert to fraction form
    248,697.15/372,954.60 = 80,261.70/x
  3. Step 3: Cross multiply
    248,697.15x = 372,954.60 × 80,261.70
  4. Step 4: Simplify right side
    248,697.15x = 29,933,970,218.82
  5. Step 5: Solve for x
    x = 29,933,970,218.82/248,697.15
  6. Step 6: Final answer
    x = 120,363.14

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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.