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Finding the Fourth Proportional to 117,992.20, 176,873.10 and 105,550.60

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Solution

The fourth proportional to 117,992.20, 176,873.10 and 105,550.60 is: 158,222.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,992.20 : 176,873.10 = 105,550.60 : x
  2. Step 2: Convert to fraction form
    117,992.20/176,873.10 = 105,550.60/x
  3. Step 3: Cross multiply
    117,992.20x = 176,873.10 × 105,550.60
  4. Step 4: Simplify right side
    117,992.20x = 18,669,061,828.86
  5. Step 5: Solve for x
    x = 18,669,061,828.86/117,992.20
  6. Step 6: Final answer
    x = 158,222.85

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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.