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Finding the Fourth Proportional to 618,591.52, 927,223.89 and 405,278.83

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Solution

The fourth proportional to 618,591.52, 927,223.89 and 405,278.83 is: 607,483.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,591.52 : 927,223.89 = 405,278.83 : x
  2. Step 2: Convert to fraction form
    618,591.52/927,223.89 = 405,278.83/x
  3. Step 3: Cross multiply
    618,591.52x = 927,223.89 × 405,278.83
  4. Step 4: Simplify right side
    618,591.52x = 375,784,213,287.25
  5. Step 5: Solve for x
    x = 375,784,213,287.25/618,591.52
  6. Step 6: Final answer
    x = 607,483.62

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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.