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Finding the Fourth Proportional to 72,845.60, 109,284.84 and 22,249.16

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Solution

The fourth proportional to 72,845.60, 109,284.84 and 22,249.16 is: 33,378.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,845.60 : 109,284.84 = 22,249.16 : x
  2. Step 2: Convert to fraction form
    72,845.60/109,284.84 = 22,249.16/x
  3. Step 3: Cross multiply
    72,845.60x = 109,284.84 × 22,249.16
  4. Step 4: Simplify right side
    72,845.60x = 2,431,495,890.73
  5. Step 5: Solve for x
    x = 2,431,495,890.73/72,845.60
  6. Step 6: Final answer
    x = 33,378.76

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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.