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Finding the Fourth Proportional to 39,481.64, 54,468.24 and 25,865.80

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Solution

The fourth proportional to 39,481.64, 54,468.24 and 25,865.80 is: 35,684.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,481.64 : 54,468.24 = 25,865.80 : x
  2. Step 2: Convert to fraction form
    39,481.64/54,468.24 = 25,865.80/x
  3. Step 3: Cross multiply
    39,481.64x = 54,468.24 × 25,865.80
  4. Step 4: Simplify right side
    39,481.64x = 1,408,864,602.19
  5. Step 5: Solve for x
    x = 1,408,864,602.19/39,481.64
  6. Step 6: Final answer
    x = 35,684.04

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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.