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Finding the Fourth Proportional to 72,551.72, 108,815.26 and 33,099.56

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Solution

The fourth proportional to 72,551.72, 108,815.26 and 33,099.56 is: 49,643.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,551.72 : 108,815.26 = 33,099.56 : x
  2. Step 2: Convert to fraction form
    72,551.72/108,815.26 = 33,099.56/x
  3. Step 3: Cross multiply
    72,551.72x = 108,815.26 × 33,099.56
  4. Step 4: Simplify right side
    72,551.72x = 3,601,737,227.29
  5. Step 5: Solve for x
    x = 3,601,737,227.29/72,551.72
  6. Step 6: Final answer
    x = 49,643.72

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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.