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Finding the Fourth Proportional to 216,845.43, 325,284.60 and 67,100.86

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Solution

The fourth proportional to 216,845.43, 325,284.60 and 67,100.86 is: 100,656.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,845.43 : 325,284.60 = 67,100.86 : x
  2. Step 2: Convert to fraction form
    216,845.43/325,284.60 = 67,100.86/x
  3. Step 3: Cross multiply
    216,845.43x = 325,284.60 × 67,100.86
  4. Step 4: Simplify right side
    216,845.43x = 21,826,876,404.76
  5. Step 5: Solve for x
    x = 21,826,876,404.76/216,845.43
  6. Step 6: Final answer
    x = 100,656.38

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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.