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Finding the Fourth Proportional to 117,455.52, 176,065 and 67,520.64

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Solution

The fourth proportional to 117,455.52, 176,065 and 67,520.64 is: 101,212.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,455.52 : 176,065 = 67,520.64 : x
  2. Step 2: Convert to fraction form
    117,455.52/176,065 = 67,520.64/x
  3. Step 3: Cross multiply
    117,455.52x = 176,065 × 67,520.64
  4. Step 4: Simplify right side
    117,455.52x = 11,888,021,481.60
  5. Step 5: Solve for x
    x = 11,888,021,481.60/117,455.52
  6. Step 6: Final answer
    x = 101,212.97

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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.