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Finding the Fourth Proportional to 2,161,520.82, 2,982,920.88 and 1,181,487.87

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Solution

The fourth proportional to 2,161,520.82, 2,982,920.88 and 1,181,487.87 is: 1,630,465.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161,520.82 : 2,982,920.88 = 1,181,487.87 : x
  2. Step 2: Convert to fraction form
    2,161,520.82/2,982,920.88 = 1,181,487.87/x
  3. Step 3: Cross multiply
    2,161,520.82x = 2,982,920.88 × 1,181,487.87
  4. Step 4: Simplify right side
    2,161,520.82x = 3,524,284,836,889.73
  5. Step 5: Solve for x
    x = 3,524,284,836,889.73/2,161,520.82
  6. Step 6: Final answer
    x = 1,630,465.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.