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Finding the Fourth Proportional to 618,560.75, 927,871.81 and 192,386.85

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Solution

The fourth proportional to 618,560.75, 927,871.81 and 192,386.85 is: 288,589.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,560.75 : 927,871.81 = 192,386.85 : x
  2. Step 2: Convert to fraction form
    618,560.75/927,871.81 = 192,386.85/x
  3. Step 3: Cross multiply
    618,560.75x = 927,871.81 × 192,386.85
  4. Step 4: Simplify right side
    618,560.75x = 178,510,330,769.21
  5. Step 5: Solve for x
    x = 178,510,330,769.21/618,560.75
  6. Step 6: Final answer
    x = 288,589.81

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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.