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Finding the Fourth Proportional to 1,885,800.78, 2,824,198.67 and 1,085,399.88

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Solution

The fourth proportional to 1,885,800.78, 2,824,198.67 and 1,085,399.88 is: 1,625,508.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,885,800.78 : 2,824,198.67 = 1,085,399.88 : x
  2. Step 2: Convert to fraction form
    1,885,800.78/2,824,198.67 = 1,085,399.88/x
  3. Step 3: Cross multiply
    1,885,800.78x = 2,824,198.67 × 1,085,399.88
  4. Step 4: Simplify right side
    1,885,800.78x = 3,065,384,892,087.16
  5. Step 5: Solve for x
    x = 3,065,384,892,087.16/1,885,800.78
  6. Step 6: Final answer
    x = 1,625,508.34

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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.