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Finding the Fourth Proportional to 79,883.52, 110,705.27 and 78,756

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Solution

The fourth proportional to 79,883.52, 110,705.27 and 78,756 is: 109,142.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,883.52 : 110,705.27 = 78,756 : x
  2. Step 2: Convert to fraction form
    79,883.52/110,705.27 = 78,756/x
  3. Step 3: Cross multiply
    79,883.52x = 110,705.27 × 78,756
  4. Step 4: Simplify right side
    79,883.52x = 8,718,704,441.01
  5. Step 5: Solve for x
    x = 8,718,704,441.01/79,883.52
  6. Step 6: Final answer
    x = 109,142.72

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These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.