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Finding the Fourth Proportional to 71,508.67, 107,286.17 and 43,076.46

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Solution

The fourth proportional to 71,508.67, 107,286.17 and 43,076.46 is: 64,628.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,508.67 : 107,286.17 = 43,076.46 : x
  2. Step 2: Convert to fraction form
    71,508.67/107,286.17 = 43,076.46/x
  3. Step 3: Cross multiply
    71,508.67x = 107,286.17 × 43,076.46
  4. Step 4: Simplify right side
    71,508.67x = 4,621,508,236.32
  5. Step 5: Solve for x
    x = 4,621,508,236.32/71,508.67
  6. Step 6: Final answer
    x = 64,628.64

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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.