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Finding the Fourth Proportional to 118,377.75, 163,366.17 and 68,076.75

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Solution

The fourth proportional to 118,377.75, 163,366.17 and 68,076.75 is: 93,948.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,377.75 : 163,366.17 = 68,076.75 : x
  2. Step 2: Convert to fraction form
    118,377.75/163,366.17 = 68,076.75/x
  3. Step 3: Cross multiply
    118,377.75x = 163,366.17 × 68,076.75
  4. Step 4: Simplify right side
    118,377.75x = 11,121,437,913.55
  5. Step 5: Solve for x
    x = 11,121,437,913.55/118,377.75
  6. Step 6: Final answer
    x = 93,948.72

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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.