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Finding the Fourth Proportional to 68,613.92, 103,093.08 and 43,664.80

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Solution

The fourth proportional to 68,613.92, 103,093.08 and 43,664.80 is: 65,606.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,613.92 : 103,093.08 = 43,664.80 : x
  2. Step 2: Convert to fraction form
    68,613.92/103,093.08 = 43,664.80/x
  3. Step 3: Cross multiply
    68,613.92x = 103,093.08 × 43,664.80
  4. Step 4: Simplify right side
    68,613.92x = 4,501,538,719.58
  5. Step 5: Solve for x
    x = 4,501,538,719.58/68,613.92
  6. Step 6: Final answer
    x = 65,606.79

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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.