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Finding the Fourth Proportional to 159,536.54, 220,157.60 and 86,940.08

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Solution

The fourth proportional to 159,536.54, 220,157.60 and 86,940.08 is: 119,975.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,536.54 : 220,157.60 = 86,940.08 : x
  2. Step 2: Convert to fraction form
    159,536.54/220,157.60 = 86,940.08/x
  3. Step 3: Cross multiply
    159,536.54x = 220,157.60 × 86,940.08
  4. Step 4: Simplify right side
    159,536.54x = 19,140,517,821.12
  5. Step 5: Solve for x
    x = 19,140,517,821.12/159,536.54
  6. Step 6: Final answer
    x = 119,975.76

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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.