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Finding the Fourth Proportional to 69,120.67, 103,676.14 and 26,992.84

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Solution

The fourth proportional to 69,120.67, 103,676.14 and 26,992.84 is: 40,487.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,120.67 : 103,676.14 = 26,992.84 : x
  2. Step 2: Convert to fraction form
    69,120.67/103,676.14 = 26,992.84/x
  3. Step 3: Cross multiply
    69,120.67x = 103,676.14 × 26,992.84
  4. Step 4: Simplify right side
    69,120.67x = 2,798,513,458.84
  5. Step 5: Solve for x
    x = 2,798,513,458.84/69,120.67
  6. Step 6: Final answer
    x = 40,487.36

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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.