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Finding the Fourth Proportional to 221,076.40, 331,614.60 and 54,864.40

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Solution

The fourth proportional to 221,076.40, 331,614.60 and 54,864.40 is: 82,296.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,076.40 : 331,614.60 = 54,864.40 : x
  2. Step 2: Convert to fraction form
    221,076.40/331,614.60 = 54,864.40/x
  3. Step 3: Cross multiply
    221,076.40x = 331,614.60 × 54,864.40
  4. Step 4: Simplify right side
    221,076.40x = 18,193,836,060.24
  5. Step 5: Solve for x
    x = 18,193,836,060.24/221,076.40
  6. Step 6: Final answer
    x = 82,296.60

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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.