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Finding the Fourth Proportional to 619,930.85, 855,532.99 and 344,289.96

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Solution

The fourth proportional to 619,930.85, 855,532.99 and 344,289.96 is: 475,135.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,930.85 : 855,532.99 = 344,289.96 : x
  2. Step 2: Convert to fraction form
    619,930.85/855,532.99 = 344,289.96/x
  3. Step 3: Cross multiply
    619,930.85x = 855,532.99 × 344,289.96
  4. Step 4: Simplify right side
    619,930.85x = 294,551,418,905.78
  5. Step 5: Solve for x
    x = 294,551,418,905.78/619,930.85
  6. Step 6: Final answer
    x = 475,135.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.