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Finding the Fourth Proportional to 117,787.60, 176,614.26 and 80,392.94

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Solution

The fourth proportional to 117,787.60, 176,614.26 and 80,392.94 is: 120,543.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,787.60 : 176,614.26 = 80,392.94 : x
  2. Step 2: Convert to fraction form
    117,787.60/176,614.26 = 80,392.94/x
  3. Step 3: Cross multiply
    117,787.60x = 176,614.26 × 80,392.94
  4. Step 4: Simplify right side
    117,787.60x = 14,198,539,607.32
  5. Step 5: Solve for x
    x = 14,198,539,607.32/117,787.60
  6. Step 6: Final answer
    x = 120,543.59

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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.