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Finding the Fourth Proportional to 163,267.88, 225,310.56 and 91,648.76

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Solution

The fourth proportional to 163,267.88, 225,310.56 and 91,648.76 is: 126,475.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,267.88 : 225,310.56 = 91,648.76 : x
  2. Step 2: Convert to fraction form
    163,267.88/225,310.56 = 91,648.76/x
  3. Step 3: Cross multiply
    163,267.88x = 225,310.56 × 91,648.76
  4. Step 4: Simplify right side
    163,267.88x = 20,649,433,438.91
  5. Step 5: Solve for x
    x = 20,649,433,438.91/163,267.88
  6. Step 6: Final answer
    x = 126,475.79

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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.