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Finding the Fourth Proportional to 276,191.18, 414,286.81 and 86,680.79

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Solution

The fourth proportional to 276,191.18, 414,286.81 and 86,680.79 is: 130,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,191.18 : 414,286.81 = 86,680.79 : x
  2. Step 2: Convert to fraction form
    276,191.18/414,286.81 = 86,680.79/x
  3. Step 3: Cross multiply
    276,191.18x = 414,286.81 × 86,680.79
  4. Step 4: Simplify right side
    276,191.18x = 35,910,708,796.39
  5. Step 5: Solve for x
    x = 35,910,708,796.39/276,191.18
  6. Step 6: Final answer
    x = 130,021.20

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1.5x scale

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.