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Finding the Fourth Proportional to 1,890,885.81, 2,836,353.42 and 628,713.44

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Solution

The fourth proportional to 1,890,885.81, 2,836,353.42 and 628,713.44 is: 943,078.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890,885.81 : 2,836,353.42 = 628,713.44 : x
  2. Step 2: Convert to fraction form
    1,890,885.81/2,836,353.42 = 628,713.44/x
  3. Step 3: Cross multiply
    1,890,885.81x = 2,836,353.42 × 628,713.44
  4. Step 4: Simplify right side
    1,890,885.81x = 1,783,253,515,743.96
  5. Step 5: Solve for x
    x = 1,783,253,515,743.96/1,890,885.81
  6. Step 6: Final answer
    x = 943,078.37

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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.