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Finding the Fourth Proportional to 362,410.20, 543,615.30 and 267,931.80

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Solution

The fourth proportional to 362,410.20, 543,615.30 and 267,931.80 is: 401,897.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,410.20 : 543,615.30 = 267,931.80 : x
  2. Step 2: Convert to fraction form
    362,410.20/543,615.30 = 267,931.80/x
  3. Step 3: Cross multiply
    362,410.20x = 543,615.30 × 267,931.80
  4. Step 4: Simplify right side
    362,410.20x = 145,651,825,836.54
  5. Step 5: Solve for x
    x = 145,651,825,836.54/362,410.20
  6. Step 6: Final answer
    x = 401,897.70

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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.