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Finding the Fourth Proportional to 17,965,542.80, 26,951,813.40 and 5,186,464.40

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Solution

The fourth proportional to 17,965,542.80, 26,951,813.40 and 5,186,464.40 is: 7,780,706.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,965,542.80 : 26,951,813.40 = 5,186,464.40 : x
  2. Step 2: Convert to fraction form
    17,965,542.80/26,951,813.40 = 5,186,464.40/x
  3. Step 3: Cross multiply
    17,965,542.80x = 26,951,813.40 × 5,186,464.40
  4. Step 4: Simplify right side
    17,965,542.80x = 139,784,620,714,542.97
  5. Step 5: Solve for x
    x = 139,784,620,714,542.97/17,965,542.80
  6. Step 6: Final answer
    x = 7,780,706.78

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.