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Finding the Fourth Proportional to 53,910.60, 80,880.30 and 48,107.40

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Solution

The fourth proportional to 53,910.60, 80,880.30 and 48,107.40 is: 72,173.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,910.60 : 80,880.30 = 48,107.40 : x
  2. Step 2: Convert to fraction form
    53,910.60/80,880.30 = 48,107.40/x
  3. Step 3: Cross multiply
    53,910.60x = 80,880.30 × 48,107.40
  4. Step 4: Simplify right side
    53,910.60x = 3,890,940,944.22
  5. Step 5: Solve for x
    x = 3,890,940,944.22/53,910.60
  6. Step 6: Final answer
    x = 72,173.95

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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.