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Finding the Fourth Proportional to 80,216.64, 110,664 and 48,367.44

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Solution

The fourth proportional to 80,216.64, 110,664 and 48,367.44 is: 66,725.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,216.64 : 110,664 = 48,367.44 : x
  2. Step 2: Convert to fraction form
    80,216.64/110,664 = 48,367.44/x
  3. Step 3: Cross multiply
    80,216.64x = 110,664 × 48,367.44
  4. Step 4: Simplify right side
    80,216.64x = 5,352,534,380.16
  5. Step 5: Solve for x
    x = 5,352,534,380.16/80,216.64
  6. Step 6: Final answer
    x = 66,725.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.