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Finding the Fourth Proportional to 68,759.40, 103,126.14 and 33,676.68

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Solution

The fourth proportional to 68,759.40, 103,126.14 and 33,676.68 is: 50,508.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,759.40 : 103,126.14 = 33,676.68 : x
  2. Step 2: Convert to fraction form
    68,759.40/103,126.14 = 33,676.68/x
  3. Step 3: Cross multiply
    68,759.40x = 103,126.14 × 33,676.68
  4. Step 4: Simplify right side
    68,759.40x = 3,472,946,016.42
  5. Step 5: Solve for x
    x = 3,472,946,016.42/68,759.40
  6. Step 6: Final answer
    x = 50,508.67

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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.