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Finding the Fourth Proportional to 415,619.79, 573,172.57 and 262,391.73

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Solution

The fourth proportional to 415,619.79, 573,172.57 and 262,391.73 is: 361,858.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,619.79 : 573,172.57 = 262,391.73 : x
  2. Step 2: Convert to fraction form
    415,619.79/573,172.57 = 262,391.73/x
  3. Step 3: Cross multiply
    415,619.79x = 573,172.57 × 262,391.73
  4. Step 4: Simplify right side
    415,619.79x = 150,395,740,409.44
  5. Step 5: Solve for x
    x = 150,395,740,409.44/415,619.79
  6. Step 6: Final answer
    x = 361,858.95

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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.