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Finding the Fourth Proportional to 67,079.52, 100,628.94 and 20,336.04

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Solution

The fourth proportional to 67,079.52, 100,628.94 and 20,336.04 is: 30,506.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,079.52 : 100,628.94 = 20,336.04 : x
  2. Step 2: Convert to fraction form
    67,079.52/100,628.94 = 20,336.04/x
  3. Step 3: Cross multiply
    67,079.52x = 100,628.94 × 20,336.04
  4. Step 4: Simplify right side
    67,079.52x = 2,046,394,149.00
  5. Step 5: Solve for x
    x = 2,046,394,149.00/67,079.52
  6. Step 6: Final answer
    x = 30,506.99

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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.