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Finding the Fourth Proportional to 117,243.92, 161,796.20 and 63,528.90

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Solution

The fourth proportional to 117,243.92, 161,796.20 and 63,528.90 is: 87,669.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,243.92 : 161,796.20 = 63,528.90 : x
  2. Step 2: Convert to fraction form
    117,243.92/161,796.20 = 63,528.90/x
  3. Step 3: Cross multiply
    117,243.92x = 161,796.20 × 63,528.90
  4. Step 4: Simplify right side
    117,243.92x = 10,278,734,292.54
  5. Step 5: Solve for x
    x = 10,278,734,292.54/117,243.92
  6. Step 6: Final answer
    x = 87,669.66

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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.