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Finding the Fourth Proportional to 45,447.77, 68,065.85 and 43,871.31

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Solution

The fourth proportional to 45,447.77, 68,065.85 and 43,871.31 is: 65,704.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,447.77 : 68,065.85 = 43,871.31 : x
  2. Step 2: Convert to fraction form
    45,447.77/68,065.85 = 43,871.31/x
  3. Step 3: Cross multiply
    45,447.77x = 68,065.85 × 43,871.31
  4. Step 4: Simplify right side
    45,447.77x = 2,986,138,115.44
  5. Step 5: Solve for x
    x = 2,986,138,115.44/45,447.77
  6. Step 6: Final answer
    x = 65,704.83

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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.