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Finding the Fourth Proportional to 163,978.28, 226,303.80 and 92,372.36

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Solution

The fourth proportional to 163,978.28, 226,303.80 and 92,372.36 is: 127,481.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,978.28 : 226,303.80 = 92,372.36 : x
  2. Step 2: Convert to fraction form
    163,978.28/226,303.80 = 92,372.36/x
  3. Step 3: Cross multiply
    163,978.28x = 226,303.80 × 92,372.36
  4. Step 4: Simplify right side
    163,978.28x = 20,904,216,082.97
  5. Step 5: Solve for x
    x = 20,904,216,082.97/163,978.28
  6. Step 6: Final answer
    x = 127,481.62

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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.