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Finding the Fourth Proportional to 159,912.82, 220,678.20 and 88,293.36

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Solution

The fourth proportional to 159,912.82, 220,678.20 and 88,293.36 is: 121,844.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,912.82 : 220,678.20 = 88,293.36 : x
  2. Step 2: Convert to fraction form
    159,912.82/220,678.20 = 88,293.36/x
  3. Step 3: Cross multiply
    159,912.82x = 220,678.20 × 88,293.36
  4. Step 4: Simplify right side
    159,912.82x = 19,484,419,756.75
  5. Step 5: Solve for x
    x = 19,484,419,756.75/159,912.82
  6. Step 6: Final answer
    x = 121,844.01

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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.