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Finding the Fourth Proportional to 118,761.10, 163,892.97 and 67,772.82

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Solution

The fourth proportional to 118,761.10, 163,892.97 and 67,772.82 is: 93,528.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,761.10 : 163,892.97 = 67,772.82 : x
  2. Step 2: Convert to fraction form
    118,761.10/163,892.97 = 67,772.82/x
  3. Step 3: Cross multiply
    118,761.10x = 163,892.97 × 67,772.82
  4. Step 4: Simplify right side
    118,761.10x = 11,107,487,596.75
  5. Step 5: Solve for x
    x = 11,107,487,596.75/118,761.10
  6. Step 6: Final answer
    x = 93,528.00

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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.