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Finding the Fourth Proportional to 118,576, 163,639.38 and 67,596.76

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Solution

The fourth proportional to 118,576, 163,639.38 and 67,596.76 is: 93,286.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,576 : 163,639.38 = 67,596.76 : x
  2. Step 2: Convert to fraction form
    118,576/163,639.38 = 67,596.76/x
  3. Step 3: Cross multiply
    118,576x = 163,639.38 × 67,596.76
  4. Step 4: Simplify right side
    118,576x = 11,061,491,896.41
  5. Step 5: Solve for x
    x = 11,061,491,896.41/118,576
  6. Step 6: Final answer
    x = 93,286.09

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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.