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Finding the Fourth Proportional to 231,992.88, 347,956.20 and 74,200.56

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Solution

The fourth proportional to 231,992.88, 347,956.20 and 74,200.56 is: 111,290.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,992.88 : 347,956.20 = 74,200.56 : x
  2. Step 2: Convert to fraction form
    231,992.88/347,956.20 = 74,200.56/x
  3. Step 3: Cross multiply
    231,992.88x = 347,956.20 × 74,200.56
  4. Step 4: Simplify right side
    231,992.88x = 25,818,544,895.47
  5. Step 5: Solve for x
    x = 25,818,544,895.47/231,992.88
  6. Step 6: Final answer
    x = 111,290.25

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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.