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Finding the Fourth Proportional to 415,863.80, 623,793.86 and 162,965.60

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Solution

The fourth proportional to 415,863.80, 623,793.86 and 162,965.60 is: 244,447.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,863.80 : 623,793.86 = 162,965.60 : x
  2. Step 2: Convert to fraction form
    415,863.80/623,793.86 = 162,965.60/x
  3. Step 3: Cross multiply
    415,863.80x = 623,793.86 × 162,965.60
  4. Step 4: Simplify right side
    415,863.80x = 101,656,940,671.22
  5. Step 5: Solve for x
    x = 101,656,940,671.22/415,863.80
  6. Step 6: Final answer
    x = 244,447.68

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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.