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Finding the Fourth Proportional to 234,203.43, 351,314.87 and 67,991.43

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Solution

The fourth proportional to 234,203.43, 351,314.87 and 67,991.43 is: 101,989.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,203.43 : 351,314.87 = 67,991.43 : x
  2. Step 2: Convert to fraction form
    234,203.43/351,314.87 = 67,991.43/x
  3. Step 3: Cross multiply
    234,203.43x = 351,314.87 × 67,991.43
  4. Step 4: Simplify right side
    234,203.43x = 23,886,400,051.61
  5. Step 5: Solve for x
    x = 23,886,400,051.61/234,203.43
  6. Step 6: Final answer
    x = 101,989.97

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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.