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Finding the Fourth Proportional to 1,192,558.23, 1,789,591.46 and 1,080,464.49

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Solution

The fourth proportional to 1,192,558.23, 1,789,591.46 and 1,080,464.49 is: 1,621,379.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192,558.23 : 1,789,591.46 = 1,080,464.49 : x
  2. Step 2: Convert to fraction form
    1,192,558.23/1,789,591.46 = 1,080,464.49/x
  3. Step 3: Cross multiply
    1,192,558.23x = 1,789,591.46 × 1,080,464.49
  4. Step 4: Simplify right side
    1,192,558.23x = 1,933,590,018,734.93
  5. Step 5: Solve for x
    x = 1,933,590,018,734.93/1,192,558.23
  6. Step 6: Final answer
    x = 1,621,379.96

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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.