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Finding the Fourth Proportional to 44,819.64, 67,213.77 and 13,221.33

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Solution

The fourth proportional to 44,819.64, 67,213.77 and 13,221.33 is: 19,827.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,819.64 : 67,213.77 = 13,221.33 : x
  2. Step 2: Convert to fraction form
    44,819.64/67,213.77 = 13,221.33/x
  3. Step 3: Cross multiply
    44,819.64x = 67,213.77 × 13,221.33
  4. Step 4: Simplify right side
    44,819.64x = 888,655,433.71
  5. Step 5: Solve for x
    x = 888,655,433.71/44,819.64
  6. Step 6: Final answer
    x = 19,827.37

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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.