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Finding the Fourth Proportional to 626,794.40, 938,809.20 and 377,040.80

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Solution

The fourth proportional to 626,794.40, 938,809.20 and 377,040.80 is: 564,729.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,794.40 : 938,809.20 = 377,040.80 : x
  2. Step 2: Convert to fraction form
    626,794.40/938,809.20 = 377,040.80/x
  3. Step 3: Cross multiply
    626,794.40x = 938,809.20 × 377,040.80
  4. Step 4: Simplify right side
    626,794.40x = 353,969,371,815.36
  5. Step 5: Solve for x
    x = 353,969,371,815.36/626,794.40
  6. Step 6: Final answer
    x = 564,729.63

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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.