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Finding the Fourth Proportional to 618,564.16, 927,993.84 and 219,239.80

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Solution

The fourth proportional to 618,564.16, 927,993.84 and 219,239.80 is: 328,912.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,564.16 : 927,993.84 = 219,239.80 : x
  2. Step 2: Convert to fraction form
    618,564.16/927,993.84 = 219,239.80/x
  3. Step 3: Cross multiply
    618,564.16x = 927,993.84 × 219,239.80
  4. Step 4: Simplify right side
    618,564.16x = 203,453,183,882.83
  5. Step 5: Solve for x
    x = 203,453,183,882.83/618,564.16
  6. Step 6: Final answer
    x = 328,912.01

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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.