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Finding the Fourth Proportional to 104,643.14, 156,961.19 and 45,478.82

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Solution

The fourth proportional to 104,643.14, 156,961.19 and 45,478.82 is: 68,216.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,643.14 : 156,961.19 = 45,478.82 : x
  2. Step 2: Convert to fraction form
    104,643.14/156,961.19 = 45,478.82/x
  3. Step 3: Cross multiply
    104,643.14x = 156,961.19 × 45,478.82
  4. Step 4: Simplify right side
    104,643.14x = 7,138,408,694.80
  5. Step 5: Solve for x
    x = 7,138,408,694.80/104,643.14
  6. Step 6: Final answer
    x = 68,216.69

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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.