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Finding the Fourth Proportional to 133,060.80, 199,591.20 and 119,938.80

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Solution

The fourth proportional to 133,060.80, 199,591.20 and 119,938.80 is: 179,908.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,060.80 : 199,591.20 = 119,938.80 : x
  2. Step 2: Convert to fraction form
    133,060.80/199,591.20 = 119,938.80/x
  3. Step 3: Cross multiply
    133,060.80x = 199,591.20 × 119,938.80
  4. Step 4: Simplify right side
    133,060.80x = 23,938,729,018.56
  5. Step 5: Solve for x
    x = 23,938,729,018.56/133,060.80
  6. Step 6: Final answer
    x = 179,908.20

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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.