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Finding the Fourth Proportional to 117,893.20, 176,436.60 and 71,179.60

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Solution

The fourth proportional to 117,893.20, 176,436.60 and 71,179.60 is: 106,525.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,893.20 : 176,436.60 = 71,179.60 : x
  2. Step 2: Convert to fraction form
    117,893.20/176,436.60 = 71,179.60/x
  3. Step 3: Cross multiply
    117,893.20x = 176,436.60 × 71,179.60
  4. Step 4: Simplify right side
    117,893.20x = 12,558,686,613.36
  5. Step 5: Solve for x
    x = 12,558,686,613.36/117,893.20
  6. Step 6: Final answer
    x = 106,525.96

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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.