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Finding the Fourth Proportional to 104,643.70, 156,965.55 and 34,519.30

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Solution

The fourth proportional to 104,643.70, 156,965.55 and 34,519.30 is: 51,778.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,643.70 : 156,965.55 = 34,519.30 : x
  2. Step 2: Convert to fraction form
    104,643.70/156,965.55 = 34,519.30/x
  3. Step 3: Cross multiply
    104,643.70x = 156,965.55 × 34,519.30
  4. Step 4: Simplify right side
    104,643.70x = 5,418,340,910.12
  5. Step 5: Solve for x
    x = 5,418,340,910.12/104,643.70
  6. Step 6: Final answer
    x = 51,778.95

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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.