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Finding the Fourth Proportional to 320,608.73, 481,285.80 and 187,584.46

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Solution

The fourth proportional to 320,608.73, 481,285.80 and 187,584.46 is: 281,594.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,608.73 : 481,285.80 = 187,584.46 : x
  2. Step 2: Convert to fraction form
    320,608.73/481,285.80 = 187,584.46/x
  3. Step 3: Cross multiply
    320,608.73x = 481,285.80 × 187,584.46
  4. Step 4: Simplify right side
    320,608.73x = 90,281,735,695.45
  5. Step 5: Solve for x
    x = 90,281,735,695.45/320,608.73
  6. Step 6: Final answer
    x = 281,594.75

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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.