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Finding the Fourth Proportional to 67,246.70, 100,884.45 and 20,504.30

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Solution

The fourth proportional to 67,246.70, 100,884.45 and 20,504.30 is: 30,760.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,246.70 : 100,884.45 = 20,504.30 : x
  2. Step 2: Convert to fraction form
    67,246.70/100,884.45 = 20,504.30/x
  3. Step 3: Cross multiply
    67,246.70x = 100,884.45 × 20,504.30
  4. Step 4: Simplify right side
    67,246.70x = 2,068,565,028.14
  5. Step 5: Solve for x
    x = 2,068,565,028.14/67,246.70
  6. Step 6: Final answer
    x = 30,760.84

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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.