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Finding the Fourth Proportional to 3,989,797.82, 5,985,537.36 and 1,293,912.83

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Solution

The fourth proportional to 3,989,797.82, 5,985,537.36 and 1,293,912.83 is: 1,941,141.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989,797.82 : 5,985,537.36 = 1,293,912.83 : x
  2. Step 2: Convert to fraction form
    3,989,797.82/5,985,537.36 = 1,293,912.83/x
  3. Step 3: Cross multiply
    3,989,797.82x = 5,985,537.36 × 1,293,912.83
  4. Step 4: Simplify right side
    3,989,797.82x = 7,744,763,554,620.64
  5. Step 5: Solve for x
    x = 7,744,763,554,620.64/3,989,797.82
  6. Step 6: Final answer
    x = 1,941,141.86

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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.