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Finding the Fourth Proportional to 61,078.92, 91,621.14 and 16,704.69

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Solution

The fourth proportional to 61,078.92, 91,621.14 and 16,704.69 is: 25,057.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,078.92 : 91,621.14 = 16,704.69 : x
  2. Step 2: Convert to fraction form
    61,078.92/91,621.14 = 16,704.69/x
  3. Step 3: Cross multiply
    61,078.92x = 91,621.14 × 16,704.69
  4. Step 4: Simplify right side
    61,078.92x = 1,530,502,741.15
  5. Step 5: Solve for x
    x = 1,530,502,741.15/61,078.92
  6. Step 6: Final answer
    x = 25,057.79

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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.