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Finding the Fourth Proportional to 159,504.85, 220,116.50 and 87,884.85

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Solution

The fourth proportional to 159,504.85, 220,116.50 and 87,884.85 is: 121,280.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,504.85 : 220,116.50 = 87,884.85 : x
  2. Step 2: Convert to fraction form
    159,504.85/220,116.50 = 87,884.85/x
  3. Step 3: Cross multiply
    159,504.85x = 220,116.50 × 87,884.85
  4. Step 4: Simplify right side
    159,504.85x = 19,344,905,556.80
  5. Step 5: Solve for x
    x = 19,344,905,556.80/159,504.85
  6. Step 6: Final answer
    x = 121,280.99

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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.