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Finding the Fourth Proportional to 117,720.88, 176,481.72 and 51,110.68

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Solution

The fourth proportional to 117,720.88, 176,481.72 and 51,110.68 is: 76,622.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,720.88 : 176,481.72 = 51,110.68 : x
  2. Step 2: Convert to fraction form
    117,720.88/176,481.72 = 51,110.68/x
  3. Step 3: Cross multiply
    117,720.88x = 176,481.72 × 51,110.68
  4. Step 4: Simplify right side
    117,720.88x = 9,020,100,716.77
  5. Step 5: Solve for x
    x = 9,020,100,716.77/117,720.88
  6. Step 6: Final answer
    x = 76,622.78

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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.