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Finding the Fourth Proportional to 73,847.20, 110,770.80 and 54,018.40

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Solution

The fourth proportional to 73,847.20, 110,770.80 and 54,018.40 is: 81,027.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,847.20 : 110,770.80 = 54,018.40 : x
  2. Step 2: Convert to fraction form
    73,847.20/110,770.80 = 54,018.40/x
  3. Step 3: Cross multiply
    73,847.20x = 110,770.80 × 54,018.40
  4. Step 4: Simplify right side
    73,847.20x = 5,983,661,382.72
  5. Step 5: Solve for x
    x = 5,983,661,382.72/73,847.20
  6. Step 6: Final answer
    x = 81,027.60

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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.