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Finding the Fourth Proportional to 218,422.80, 327,634.20 and 60,652.80

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Solution

The fourth proportional to 218,422.80, 327,634.20 and 60,652.80 is: 90,979.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,422.80 : 327,634.20 = 60,652.80 : x
  2. Step 2: Convert to fraction form
    218,422.80/327,634.20 = 60,652.80/x
  3. Step 3: Cross multiply
    218,422.80x = 327,634.20 × 60,652.80
  4. Step 4: Simplify right side
    218,422.80x = 19,871,931,605.76
  5. Step 5: Solve for x
    x = 19,871,931,605.76/218,422.80
  6. Step 6: Final answer
    x = 90,979.20

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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.