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Finding the Fourth Proportional to 220,873.42, 331,310.13 and 54,661.42

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Solution

The fourth proportional to 220,873.42, 331,310.13 and 54,661.42 is: 81,992.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,873.42 : 331,310.13 = 54,661.42 : x
  2. Step 2: Convert to fraction form
    220,873.42/331,310.13 = 54,661.42/x
  3. Step 3: Cross multiply
    220,873.42x = 331,310.13 × 54,661.42
  4. Step 4: Simplify right side
    220,873.42x = 18,109,882,166.18
  5. Step 5: Solve for x
    x = 18,109,882,166.18/220,873.42
  6. Step 6: Final answer
    x = 81,992.13

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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.