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Finding the Fourth Proportional to 171,691.44, 257,611.16 and 92,861.16

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Solution

The fourth proportional to 171,691.44, 257,611.16 and 92,861.16 is: 139,331.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,691.44 : 257,611.16 = 92,861.16 : x
  2. Step 2: Convert to fraction form
    171,691.44/257,611.16 = 92,861.16/x
  3. Step 3: Cross multiply
    171,691.44x = 257,611.16 × 92,861.16
  4. Step 4: Simplify right side
    171,691.44x = 23,922,071,146.55
  5. Step 5: Solve for x
    x = 23,922,071,146.55/171,691.44
  6. Step 6: Final answer
    x = 139,331.76

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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.