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Finding the Fourth Proportional to 173,270.82, 259,658.37 and 78,265.11

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Solution

The fourth proportional to 173,270.82, 259,658.37 and 78,265.11 is: 117,285.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,270.82 : 259,658.37 = 78,265.11 : x
  2. Step 2: Convert to fraction form
    173,270.82/259,658.37 = 78,265.11/x
  3. Step 3: Cross multiply
    173,270.82x = 259,658.37 × 78,265.11
  4. Step 4: Simplify right side
    173,270.82x = 20,322,190,890.47
  5. Step 5: Solve for x
    x = 20,322,190,890.47/173,270.82
  6. Step 6: Final answer
    x = 117,285.71

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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.