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Finding the Fourth Proportional to 64,819.26, 89,611.11 and 64,228.86

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Solution

The fourth proportional to 64,819.26, 89,611.11 and 64,228.86 is: 88,794.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,819.26 : 89,611.11 = 64,228.86 : x
  2. Step 2: Convert to fraction form
    64,819.26/89,611.11 = 64,228.86/x
  3. Step 3: Cross multiply
    64,819.26x = 89,611.11 × 64,228.86
  4. Step 4: Simplify right side
    64,819.26x = 5,755,619,438.63
  5. Step 5: Solve for x
    x = 5,755,619,438.63/64,819.26
  6. Step 6: Final answer
    x = 88,794.90

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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.