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Finding the Fourth Proportional to 28,550.97, 42,827.66 and 8,829.90

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Solution

The fourth proportional to 28,550.97, 42,827.66 and 8,829.90 is: 13,245.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,550.97 : 42,827.66 = 8,829.90 : x
  2. Step 2: Convert to fraction form
    28,550.97/42,827.66 = 8,829.90/x
  3. Step 3: Cross multiply
    28,550.97x = 42,827.66 × 8,829.90
  4. Step 4: Simplify right side
    28,550.97x = 378,163,910.88
  5. Step 5: Solve for x
    x = 378,163,910.88/28,550.97
  6. Step 6: Final answer
    x = 13,245.22

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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.