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Finding the Fourth Proportional to 1,890,889.31, 2,836,358.67 and 628,716.94

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Solution

The fourth proportional to 1,890,889.31, 2,836,358.67 and 628,716.94 is: 943,083.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890,889.31 : 2,836,358.67 = 628,716.94 : x
  2. Step 2: Convert to fraction form
    1,890,889.31/2,836,358.67 = 628,716.94/x
  3. Step 3: Cross multiply
    1,890,889.31x = 2,836,358.67 × 628,716.94
  4. Step 4: Simplify right side
    1,890,889.31x = 1,783,266,739,011.66
  5. Step 5: Solve for x
    x = 1,783,266,739,011.66/1,890,889.31
  6. Step 6: Final answer
    x = 943,083.62

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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.