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Finding the Fourth Proportional to 163,978.20, 226,311.30 and 92,372.04

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Solution

The fourth proportional to 163,978.20, 226,311.30 and 92,372.04 is: 127,485.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,978.20 : 226,311.30 = 92,372.04 : x
  2. Step 2: Convert to fraction form
    163,978.20/226,311.30 = 92,372.04/x
  3. Step 3: Cross multiply
    163,978.20x = 226,311.30 × 92,372.04
  4. Step 4: Simplify right side
    163,978.20x = 20,904,836,456.05
  5. Step 5: Solve for x
    x = 20,904,836,456.05/163,978.20
  6. Step 6: Final answer
    x = 127,485.46

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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.