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Finding the Fourth Proportional to 171,311.78, 236,410.80 and 92,729.72

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Solution

The fourth proportional to 171,311.78, 236,410.80 and 92,729.72 is: 127,967.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,311.78 : 236,410.80 = 92,729.72 : x
  2. Step 2: Convert to fraction form
    171,311.78/236,410.80 = 92,729.72/x
  3. Step 3: Cross multiply
    171,311.78x = 236,410.80 × 92,729.72
  4. Step 4: Simplify right side
    171,311.78x = 21,922,307,288.98
  5. Step 5: Solve for x
    x = 21,922,307,288.98/171,311.78
  6. Step 6: Final answer
    x = 127,967.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.