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Finding the Fourth Proportional to 214,635.68, 321,880.62 and 74,361.56

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Solution

The fourth proportional to 214,635.68, 321,880.62 and 74,361.56 is: 111,517.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,635.68 : 321,880.62 = 74,361.56 : x
  2. Step 2: Convert to fraction form
    214,635.68/321,880.62 = 74,361.56/x
  3. Step 3: Cross multiply
    214,635.68x = 321,880.62 × 74,361.56
  4. Step 4: Simplify right side
    214,635.68x = 23,935,545,036.97
  5. Step 5: Solve for x
    x = 23,935,545,036.97/214,635.68
  6. Step 6: Final answer
    x = 111,517.08

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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.