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Finding the Fourth Proportional to 68,599.92, 103,072.08 and 43,650.80

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Solution

The fourth proportional to 68,599.92, 103,072.08 and 43,650.80 is: 65,585.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,599.92 : 103,072.08 = 43,650.80 : x
  2. Step 2: Convert to fraction form
    68,599.92/103,072.08 = 43,650.80/x
  3. Step 3: Cross multiply
    68,599.92x = 103,072.08 × 43,650.80
  4. Step 4: Simplify right side
    68,599.92x = 4,499,178,749.66
  5. Step 5: Solve for x
    x = 4,499,178,749.66/68,599.92
  6. Step 6: Final answer
    x = 65,585.77

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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.