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Finding the Fourth Proportional to 86,563.25, 119,190.83 and 73,787.78

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Solution

The fourth proportional to 86,563.25, 119,190.83 and 73,787.78 is: 101,600.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,563.25 : 119,190.83 = 73,787.78 : x
  2. Step 2: Convert to fraction form
    86,563.25/119,190.83 = 73,787.78/x
  3. Step 3: Cross multiply
    86,563.25x = 119,190.83 × 73,787.78
  4. Step 4: Simplify right side
    86,563.25x = 8,794,825,777.16
  5. Step 5: Solve for x
    x = 8,794,825,777.16/86,563.25
  6. Step 6: Final answer
    x = 101,600.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.