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Finding the Fourth Proportional to 72,694.56, 109,040.53 and 39,625.10

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Solution

The fourth proportional to 72,694.56, 109,040.53 and 39,625.10 is: 59,436.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,694.56 : 109,040.53 = 39,625.10 : x
  2. Step 2: Convert to fraction form
    72,694.56/109,040.53 = 39,625.10/x
  3. Step 3: Cross multiply
    72,694.56x = 109,040.53 × 39,625.10
  4. Step 4: Simplify right side
    72,694.56x = 4,320,741,905.30
  5. Step 5: Solve for x
    x = 4,320,741,905.30/72,694.56
  6. Step 6: Final answer
    x = 59,436.94

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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.