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Finding the Fourth Proportional to 53,947.80, 80,940.90 and 52,027.80

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Solution

The fourth proportional to 53,947.80, 80,940.90 and 52,027.80 is: 78,060.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,947.80 : 80,940.90 = 52,027.80 : x
  2. Step 2: Convert to fraction form
    53,947.80/80,940.90 = 52,027.80/x
  3. Step 3: Cross multiply
    53,947.80x = 80,940.90 × 52,027.80
  4. Step 4: Simplify right side
    53,947.80x = 4,211,176,957.02
  5. Step 5: Solve for x
    x = 4,211,176,957.02/53,947.80
  6. Step 6: Final answer
    x = 78,060.22

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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.