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Finding the Fourth Proportional to 115,793.40, 159,796.02 and 68,047.80

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Solution

The fourth proportional to 115,793.40, 159,796.02 and 68,047.80 is: 93,906.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,793.40 : 159,796.02 = 68,047.80 : x
  2. Step 2: Convert to fraction form
    115,793.40/159,796.02 = 68,047.80/x
  3. Step 3: Cross multiply
    115,793.40x = 159,796.02 × 68,047.80
  4. Step 4: Simplify right side
    115,793.40x = 10,873,767,609.76
  5. Step 5: Solve for x
    x = 10,873,767,609.76/115,793.40
  6. Step 6: Final answer
    x = 93,906.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.