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Finding the Fourth Proportional to 117,290.11, 175,936.12 and 76,797.76

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Solution

The fourth proportional to 117,290.11, 175,936.12 and 76,797.76 is: 115,197.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,290.11 : 175,936.12 = 76,797.76 : x
  2. Step 2: Convert to fraction form
    117,290.11/175,936.12 = 76,797.76/x
  3. Step 3: Cross multiply
    117,290.11x = 175,936.12 × 76,797.76
  4. Step 4: Simplify right side
    117,290.11x = 13,511,499,919.09
  5. Step 5: Solve for x
    x = 13,511,499,919.09/117,290.11
  6. Step 6: Final answer
    x = 115,197.27

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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.