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Finding the Fourth Proportional to 171,761.93, 257,380.14 and 91,811.27

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Solution

The fourth proportional to 171,761.93, 257,380.14 and 91,811.27 is: 137,576.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,761.93 : 257,380.14 = 91,811.27 : x
  2. Step 2: Convert to fraction form
    171,761.93/257,380.14 = 91,811.27/x
  3. Step 3: Cross multiply
    171,761.93x = 257,380.14 × 91,811.27
  4. Step 4: Simplify right side
    171,761.93x = 23,630,396,239.28
  5. Step 5: Solve for x
    x = 23,630,396,239.28/171,761.93
  6. Step 6: Final answer
    x = 137,576.45

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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.