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Finding the Fourth Proportional to 163,190.73, 225,202.59 and 91,570.58

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Solution

The fourth proportional to 163,190.73, 225,202.59 and 91,570.58 is: 126,367.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,190.73 : 225,202.59 = 91,570.58 : x
  2. Step 2: Convert to fraction form
    163,190.73/225,202.59 = 91,570.58/x
  3. Step 3: Cross multiply
    163,190.73x = 225,202.59 × 91,570.58
  4. Step 4: Simplify right side
    163,190.73x = 20,621,930,657.79
  5. Step 5: Solve for x
    x = 20,621,930,657.79/163,190.73
  6. Step 6: Final answer
    x = 126,367.05

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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.