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Finding the Fourth Proportional to 72,702.99, 108,976.05 and 35,183.79

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Solution

The fourth proportional to 72,702.99, 108,976.05 and 35,183.79 is: 52,737.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,702.99 : 108,976.05 = 35,183.79 : x
  2. Step 2: Convert to fraction form
    72,702.99/108,976.05 = 35,183.79/x
  3. Step 3: Cross multiply
    72,702.99x = 108,976.05 × 35,183.79
  4. Step 4: Simplify right side
    72,702.99x = 3,834,190,458.23
  5. Step 5: Solve for x
    x = 3,834,190,458.23/72,702.99
  6. Step 6: Final answer
    x = 52,737.73

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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.