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Finding the Fourth Proportional to 289,046.80, 433,375.80 and 154,133.20

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Solution

The fourth proportional to 289,046.80, 433,375.80 and 154,133.20 is: 231,096.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,046.80 : 433,375.80 = 154,133.20 : x
  2. Step 2: Convert to fraction form
    289,046.80/433,375.80 = 154,133.20/x
  3. Step 3: Cross multiply
    289,046.80x = 433,375.80 × 154,133.20
  4. Step 4: Simplify right side
    289,046.80x = 66,797,598,856.56
  5. Step 5: Solve for x
    x = 66,797,598,856.56/289,046.80
  6. Step 6: Final answer
    x = 231,096.14

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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.