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Finding the Fourth Proportional to 444,912.40, 667,303.80 and 129,336.40

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Solution

The fourth proportional to 444,912.40, 667,303.80 and 129,336.40 is: 193,985.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,912.40 : 667,303.80 = 129,336.40 : x
  2. Step 2: Convert to fraction form
    444,912.40/667,303.80 = 129,336.40/x
  3. Step 3: Cross multiply
    444,912.40x = 667,303.80 × 129,336.40
  4. Step 4: Simplify right side
    444,912.40x = 86,306,671,198.32
  5. Step 5: Solve for x
    x = 86,306,671,198.32/444,912.40
  6. Step 6: Final answer
    x = 193,985.76

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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.