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Finding the Fourth Proportional to 61,315.44, 91,979.64 and 26,245.68

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Solution

The fourth proportional to 61,315.44, 91,979.64 and 26,245.68 is: 39,371.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,315.44 : 91,979.64 = 26,245.68 : x
  2. Step 2: Convert to fraction form
    61,315.44/91,979.64 = 26,245.68/x
  3. Step 3: Cross multiply
    61,315.44x = 91,979.64 × 26,245.68
  4. Step 4: Simplify right side
    61,315.44x = 2,414,068,197.96
  5. Step 5: Solve for x
    x = 2,414,068,197.96/61,315.44
  6. Step 6: Final answer
    x = 39,371.29

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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.