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Finding the Fourth Proportional to 68,129.60, 102,079.20 and 32,993.60

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Solution

The fourth proportional to 68,129.60, 102,079.20 and 32,993.60 is: 49,434.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,129.60 : 102,079.20 = 32,993.60 : x
  2. Step 2: Convert to fraction form
    68,129.60/102,079.20 = 32,993.60/x
  3. Step 3: Cross multiply
    68,129.60x = 102,079.20 × 32,993.60
  4. Step 4: Simplify right side
    68,129.60x = 3,367,960,293.12
  5. Step 5: Solve for x
    x = 3,367,960,293.12/68,129.60
  6. Step 6: Final answer
    x = 49,434.61

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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.