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Finding the Fourth Proportional to 18,764.73, 28,125.22 and 10,957.14

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Solution

The fourth proportional to 18,764.73, 28,125.22 and 10,957.14 is: 16,422.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,764.73 : 28,125.22 = 10,957.14 : x
  2. Step 2: Convert to fraction form
    18,764.73/28,125.22 = 10,957.14/x
  3. Step 3: Cross multiply
    18,764.73x = 28,125.22 × 10,957.14
  4. Step 4: Simplify right side
    18,764.73x = 308,171,973.07
  5. Step 5: Solve for x
    x = 308,171,973.07/18,764.73
  6. Step 6: Final answer
    x = 16,422.94

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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.