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Finding the Fourth Proportional to 68,222.60, 102,344.83 and 28,785.52

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Solution

The fourth proportional to 68,222.60, 102,344.83 and 28,785.52 is: 43,182.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,222.60 : 102,344.83 = 28,785.52 : x
  2. Step 2: Convert to fraction form
    68,222.60/102,344.83 = 28,785.52/x
  3. Step 3: Cross multiply
    68,222.60x = 102,344.83 × 28,785.52
  4. Step 4: Simplify right side
    68,222.60x = 2,946,049,150.86
  5. Step 5: Solve for x
    x = 2,946,049,150.86/68,222.60
  6. Step 6: Final answer
    x = 43,182.89

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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.