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Finding the Fourth Proportional to 618,505.14, 927,902.90 and 192,019.18

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Solution

The fourth proportional to 618,505.14, 927,902.90 and 192,019.18 is: 288,073.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,505.14 : 927,902.90 = 192,019.18 : x
  2. Step 2: Convert to fraction form
    618,505.14/927,902.90 = 192,019.18/x
  3. Step 3: Cross multiply
    618,505.14x = 927,902.90 × 192,019.18
  4. Step 4: Simplify right side
    618,505.14x = 178,175,153,977.62
  5. Step 5: Solve for x
    x = 178,175,153,977.62/618,505.14
  6. Step 6: Final answer
    x = 288,073.85

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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.