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Finding the Fourth Proportional to 358,123.20, 536,601.60 and 263,644.80

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Solution

The fourth proportional to 358,123.20, 536,601.60 and 263,644.80 is: 395,037.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,123.20 : 536,601.60 = 263,644.80 : x
  2. Step 2: Convert to fraction form
    358,123.20/536,601.60 = 263,644.80/x
  3. Step 3: Cross multiply
    358,123.20x = 536,601.60 × 263,644.80
  4. Step 4: Simplify right side
    358,123.20x = 141,472,221,511.68
  5. Step 5: Solve for x
    x = 141,472,221,511.68/358,123.20
  6. Step 6: Final answer
    x = 395,037.86

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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.