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Finding the Fourth Proportional to 95,651.78, 131,920.85 and 84,904.50

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Solution

The fourth proportional to 95,651.78, 131,920.85 and 84,904.50 is: 117,098.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,651.78 : 131,920.85 = 84,904.50 : x
  2. Step 2: Convert to fraction form
    95,651.78/131,920.85 = 84,904.50/x
  3. Step 3: Cross multiply
    95,651.78x = 131,920.85 × 84,904.50
  4. Step 4: Simplify right side
    95,651.78x = 11,200,673,808.83
  5. Step 5: Solve for x
    x = 11,200,673,808.83/95,651.78
  6. Step 6: Final answer
    x = 117,098.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.