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Finding the Fourth Proportional to 1,890,930.38, 2,836,420.14 and 628,757.96

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Solution

The fourth proportional to 1,890,930.38, 2,836,420.14 and 628,757.96 is: 943,145.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890,930.38 : 2,836,420.14 = 628,757.96 : x
  2. Step 2: Convert to fraction form
    1,890,930.38/2,836,420.14 = 628,757.96/x
  3. Step 3: Cross multiply
    1,890,930.38x = 2,836,420.14 × 628,757.96
  4. Step 4: Simplify right side
    1,890,930.38x = 1,783,421,740,929.31
  5. Step 5: Solve for x
    x = 1,783,421,740,929.31/1,890,930.38
  6. Step 6: Final answer
    x = 943,145.11

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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.