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Finding the Fourth Proportional to 64,445.60, 96,687.84 and 43,469.84

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Solution

The fourth proportional to 64,445.60, 96,687.84 and 43,469.84 is: 65,217.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,445.60 : 96,687.84 = 43,469.84 : x
  2. Step 2: Convert to fraction form
    64,445.60/96,687.84 = 43,469.84/x
  3. Step 3: Cross multiply
    64,445.60x = 96,687.84 × 43,469.84
  4. Step 4: Simplify right side
    64,445.60x = 4,203,004,934.75
  5. Step 5: Solve for x
    x = 4,203,004,934.75/64,445.60
  6. Step 6: Final answer
    x = 65,217.87

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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.