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Finding the Fourth Proportional to 112,487.68, 168,774.18 and 67,540.44

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Solution

The fourth proportional to 112,487.68, 168,774.18 and 67,540.44 is: 101,336.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,487.68 : 168,774.18 = 67,540.44 : x
  2. Step 2: Convert to fraction form
    112,487.68/168,774.18 = 67,540.44/x
  3. Step 3: Cross multiply
    112,487.68x = 168,774.18 × 67,540.44
  4. Step 4: Simplify right side
    112,487.68x = 11,399,082,377.84
  5. Step 5: Solve for x
    x = 11,399,082,377.84/112,487.68
  6. Step 6: Final answer
    x = 101,336.27

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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.