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Finding the Fourth Proportional to 449,151.78, 619,838.83 and 245,211.30

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Solution

The fourth proportional to 449,151.78, 619,838.83 and 245,211.30 is: 338,396.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,151.78 : 619,838.83 = 245,211.30 : x
  2. Step 2: Convert to fraction form
    449,151.78/619,838.83 = 245,211.30/x
  3. Step 3: Cross multiply
    449,151.78x = 619,838.83 × 245,211.30
  4. Step 4: Simplify right side
    449,151.78x = 151,991,482,195.59
  5. Step 5: Solve for x
    x = 151,991,482,195.59/449,151.78
  6. Step 6: Final answer
    x = 338,396.71

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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.