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Finding the Fourth Proportional to 21,845.25, 32,765.09 and 7,052.63

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Solution

The fourth proportional to 21,845.25, 32,765.09 and 7,052.63 is: 10,578.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,845.25 : 32,765.09 = 7,052.63 : x
  2. Step 2: Convert to fraction form
    21,845.25/32,765.09 = 7,052.63/x
  3. Step 3: Cross multiply
    21,845.25x = 32,765.09 × 7,052.63
  4. Step 4: Simplify right side
    21,845.25x = 231,079,857.60
  5. Step 5: Solve for x
    x = 231,079,857.60/21,845.25
  6. Step 6: Final answer
    x = 10,578.04

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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.