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Finding the Fourth Proportional to 159,704.64, 220,384.26 and 91,674.36

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Solution

The fourth proportional to 159,704.64, 220,384.26 and 91,674.36 is: 126,505.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,704.64 : 220,384.26 = 91,674.36 : x
  2. Step 2: Convert to fraction form
    159,704.64/220,384.26 = 91,674.36/x
  3. Step 3: Cross multiply
    159,704.64x = 220,384.26 × 91,674.36
  4. Step 4: Simplify right side
    159,704.64x = 20,203,585,989.57
  5. Step 5: Solve for x
    x = 20,203,585,989.57/159,704.64
  6. Step 6: Final answer
    x = 126,505.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.