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Finding the Fourth Proportional to 163,463.90, 225,580.38 and 91,843.88

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Solution

The fourth proportional to 163,463.90, 225,580.38 and 91,843.88 is: 126,744.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,463.90 : 225,580.38 = 91,843.88 : x
  2. Step 2: Convert to fraction form
    163,463.90/225,580.38 = 91,843.88/x
  3. Step 3: Cross multiply
    163,463.90x = 225,580.38 × 91,843.88
  4. Step 4: Simplify right side
    163,463.90x = 20,718,177,351.07
  5. Step 5: Solve for x
    x = 20,718,177,351.07/163,463.90
  6. Step 6: Final answer
    x = 126,744.67

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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.