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Finding the Fourth Proportional to 118,771.77, 163,859.42 and 67,787.33

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Solution

The fourth proportional to 118,771.77, 163,859.42 and 67,787.33 is: 93,520.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,771.77 : 163,859.42 = 67,787.33 : x
  2. Step 2: Convert to fraction form
    118,771.77/163,859.42 = 67,787.33/x
  3. Step 3: Cross multiply
    118,771.77x = 163,859.42 × 67,787.33
  4. Step 4: Simplify right side
    118,771.77x = 11,107,593,156.27
  5. Step 5: Solve for x
    x = 11,107,593,156.27/118,771.77
  6. Step 6: Final answer
    x = 93,520.48

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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.