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Finding the Fourth Proportional to 629,940.40, 944,910.60 and 405,554.20

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Solution

The fourth proportional to 629,940.40, 944,910.60 and 405,554.20 is: 608,331.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,940.40 : 944,910.60 = 405,554.20 : x
  2. Step 2: Convert to fraction form
    629,940.40/944,910.60 = 405,554.20/x
  3. Step 3: Cross multiply
    629,940.40x = 944,910.60 × 405,554.20
  4. Step 4: Simplify right side
    629,940.40x = 383,212,462,454.52
  5. Step 5: Solve for x
    x = 383,212,462,454.52/629,940.40
  6. Step 6: Final answer
    x = 608,331.30

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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.