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Finding the Fourth Proportional to 322,469.08, 483,714.54 and 85,811.98

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Solution

The fourth proportional to 322,469.08, 483,714.54 and 85,811.98 is: 128,720.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,469.08 : 483,714.54 = 85,811.98 : x
  2. Step 2: Convert to fraction form
    322,469.08/483,714.54 = 85,811.98/x
  3. Step 3: Cross multiply
    322,469.08x = 483,714.54 × 85,811.98
  4. Step 4: Simplify right side
    322,469.08x = 41,508,503,212.42
  5. Step 5: Solve for x
    x = 41,508,503,212.42/322,469.08
  6. Step 6: Final answer
    x = 128,720.88

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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.