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Finding the Fourth Proportional to 21,850.63, 32,751.15 and 19,213.03

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Solution

The fourth proportional to 21,850.63, 32,751.15 and 19,213.03 is: 28,797.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,850.63 : 32,751.15 = 19,213.03 : x
  2. Step 2: Convert to fraction form
    21,850.63/32,751.15 = 19,213.03/x
  3. Step 3: Cross multiply
    21,850.63x = 32,751.15 × 19,213.03
  4. Step 4: Simplify right side
    21,850.63x = 629,248,796.37
  5. Step 5: Solve for x
    x = 629,248,796.37/21,850.63
  6. Step 6: Final answer
    x = 28,797.74

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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.