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Finding the Fourth Proportional to 76,175.52, 114,660.54 and 68,930.88

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Solution

The fourth proportional to 76,175.52, 114,660.54 and 68,930.88 is: 103,755.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,175.52 : 114,660.54 = 68,930.88 : x
  2. Step 2: Convert to fraction form
    76,175.52/114,660.54 = 68,930.88/x
  3. Step 3: Cross multiply
    76,175.52x = 114,660.54 × 68,930.88
  4. Step 4: Simplify right side
    76,175.52x = 7,903,651,923.48
  5. Step 5: Solve for x
    x = 7,903,651,923.48/76,175.52
  6. Step 6: Final answer
    x = 103,755.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.