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Finding the Fourth Proportional to 65,906.20, 98,859.30 and 54,096.40

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Solution

The fourth proportional to 65,906.20, 98,859.30 and 54,096.40 is: 81,144.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,906.20 : 98,859.30 = 54,096.40 : x
  2. Step 2: Convert to fraction form
    65,906.20/98,859.30 = 54,096.40/x
  3. Step 3: Cross multiply
    65,906.20x = 98,859.30 × 54,096.40
  4. Step 4: Simplify right side
    65,906.20x = 5,347,932,236.52
  5. Step 5: Solve for x
    x = 5,347,932,236.52/65,906.20
  6. Step 6: Final answer
    x = 81,144.60

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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.