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Finding the Fourth Proportional to 64,620.80, 96,891.51 and 25,131.91

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Solution

The fourth proportional to 64,620.80, 96,891.51 and 25,131.91 is: 37,682.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,620.80 : 96,891.51 = 25,131.91 : x
  2. Step 2: Convert to fraction form
    64,620.80/96,891.51 = 25,131.91/x
  3. Step 3: Cross multiply
    64,620.80x = 96,891.51 × 25,131.91
  4. Step 4: Simplify right side
    64,620.80x = 2,435,068,709.08
  5. Step 5: Solve for x
    x = 2,435,068,709.08/64,620.80
  6. Step 6: Final answer
    x = 37,682.43

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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.