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Finding the Fourth Proportional to 28,819.80, 43,223.22 and 13,222.44

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Solution

The fourth proportional to 28,819.80, 43,223.22 and 13,222.44 is: 19,830.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,819.80 : 43,223.22 = 13,222.44 : x
  2. Step 2: Convert to fraction form
    28,819.80/43,223.22 = 13,222.44/x
  3. Step 3: Cross multiply
    28,819.80x = 43,223.22 × 13,222.44
  4. Step 4: Simplify right side
    28,819.80x = 571,516,433.06
  5. Step 5: Solve for x
    x = 571,516,433.06/28,819.80
  6. Step 6: Final answer
    x = 19,830.69

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.