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Finding the Fourth Proportional to 28,168.50, 38,872.80 and 15,593.52

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Solution

The fourth proportional to 28,168.50, 38,872.80 and 15,593.52 is: 21,519.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,168.50 : 38,872.80 = 15,593.52 : x
  2. Step 2: Convert to fraction form
    28,168.50/38,872.80 = 15,593.52/x
  3. Step 3: Cross multiply
    28,168.50x = 38,872.80 × 15,593.52
  4. Step 4: Simplify right side
    28,168.50x = 606,163,784.26
  5. Step 5: Solve for x
    x = 606,163,784.26/28,168.50
  6. Step 6: Final answer
    x = 21,519.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.