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Finding the Fourth Proportional to 218,078.30, 327,139.05 and 75,901.70

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Solution

The fourth proportional to 218,078.30, 327,139.05 and 75,901.70 is: 113,860.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,078.30 : 327,139.05 = 75,901.70 : x
  2. Step 2: Convert to fraction form
    218,078.30/327,139.05 = 75,901.70/x
  3. Step 3: Cross multiply
    218,078.30x = 327,139.05 × 75,901.70
  4. Step 4: Simplify right side
    218,078.30x = 24,830,410,031.39
  5. Step 5: Solve for x
    x = 24,830,410,031.39/218,078.30
  6. Step 6: Final answer
    x = 113,860.07

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.