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Finding the Fourth Proportional to 43,281.69, 64,919.29 and 15,201.99

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Solution

The fourth proportional to 43,281.69, 64,919.29 and 15,201.99 is: 22,801.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,281.69 : 64,919.29 = 15,201.99 : x
  2. Step 2: Convert to fraction form
    43,281.69/64,919.29 = 15,201.99/x
  3. Step 3: Cross multiply
    43,281.69x = 64,919.29 × 15,201.99
  4. Step 4: Simplify right side
    43,281.69x = 986,902,408.54
  5. Step 5: Solve for x
    x = 986,902,408.54/43,281.69
  6. Step 6: Final answer
    x = 22,801.85

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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.