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Finding the Fourth Proportional to 239,660.40, 359,620.20 and 106,561.20

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Solution

The fourth proportional to 239,660.40, 359,620.20 and 106,561.20 is: 159,899.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,660.40 : 359,620.20 = 106,561.20 : x
  2. Step 2: Convert to fraction form
    239,660.40/359,620.20 = 106,561.20/x
  3. Step 3: Cross multiply
    239,660.40x = 359,620.20 × 106,561.20
  4. Step 4: Simplify right side
    239,660.40x = 38,321,560,056.24
  5. Step 5: Solve for x
    x = 38,321,560,056.24/239,660.40
  6. Step 6: Final answer
    x = 159,899.42

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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.