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Finding the Fourth Proportional to 208,660.05, 287,951.20 and 113,166.82

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Solution

The fourth proportional to 208,660.05, 287,951.20 and 113,166.82 is: 156,170.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,660.05 : 287,951.20 = 113,166.82 : x
  2. Step 2: Convert to fraction form
    208,660.05/287,951.20 = 113,166.82/x
  3. Step 3: Cross multiply
    208,660.05x = 287,951.20 × 113,166.82
  4. Step 4: Simplify right side
    208,660.05x = 32,586,522,332.77
  5. Step 5: Solve for x
    x = 32,586,522,332.77/208,660.05
  6. Step 6: Final answer
    x = 156,170.39

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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.