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Finding the Fourth Proportional to 171,307.91, 236,405.46 and 92,725.85

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Solution

The fourth proportional to 171,307.91, 236,405.46 and 92,725.85 is: 127,961.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,307.91 : 236,405.46 = 92,725.85 : x
  2. Step 2: Convert to fraction form
    171,307.91/236,405.46 = 92,725.85/x
  3. Step 3: Cross multiply
    171,307.91x = 236,405.46 × 92,725.85
  4. Step 4: Simplify right side
    171,307.91x = 21,920,897,814.15
  5. Step 5: Solve for x
    x = 21,920,897,814.15/171,307.91
  6. Step 6: Final answer
    x = 127,961.97

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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.