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Finding the Fourth Proportional to 220,986.30, 331,418.88 and 61,023.90

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Solution

The fourth proportional to 220,986.30, 331,418.88 and 61,023.90 is: 91,519.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,986.30 : 331,418.88 = 61,023.90 : x
  2. Step 2: Convert to fraction form
    220,986.30/331,418.88 = 61,023.90/x
  3. Step 3: Cross multiply
    220,986.30x = 331,418.88 × 61,023.90
  4. Step 4: Simplify right side
    220,986.30x = 20,224,472,591.23
  5. Step 5: Solve for x
    x = 20,224,472,591.23/220,986.30
  6. Step 6: Final answer
    x = 91,519.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.