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Finding the Fourth Proportional to 1,890,929.63, 2,836,419.02 and 628,757.21

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Solution

The fourth proportional to 1,890,929.63, 2,836,419.02 and 628,757.21 is: 943,143.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890,929.63 : 2,836,419.02 = 628,757.21 : x
  2. Step 2: Convert to fraction form
    1,890,929.63/2,836,419.02 = 628,757.21/x
  3. Step 3: Cross multiply
    1,890,929.63x = 2,836,419.02 × 628,757.21
  4. Step 4: Simplify right side
    1,890,929.63x = 1,783,418,906,262.35
  5. Step 5: Solve for x
    x = 1,783,418,906,262.35/1,890,929.63
  6. Step 6: Final answer
    x = 943,143.98

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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.