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Finding the Fourth Proportional to 64,456.20, 88,949.88 and 36,162.09

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Solution

The fourth proportional to 64,456.20, 88,949.88 and 36,162.09 is: 49,903.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,456.20 : 88,949.88 = 36,162.09 : x
  2. Step 2: Convert to fraction form
    64,456.20/88,949.88 = 36,162.09/x
  3. Step 3: Cross multiply
    64,456.20x = 88,949.88 × 36,162.09
  4. Step 4: Simplify right side
    64,456.20x = 3,216,613,566.05
  5. Step 5: Solve for x
    x = 3,216,613,566.05/64,456.20
  6. Step 6: Final answer
    x = 49,903.87

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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.