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Finding the Fourth Proportional to 18,635.43, 27,953.14 and 12,774.27

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Solution

The fourth proportional to 18,635.43, 27,953.14 and 12,774.27 is: 19,161.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,635.43 : 27,953.14 = 12,774.27 : x
  2. Step 2: Convert to fraction form
    18,635.43/27,953.14 = 12,774.27/x
  3. Step 3: Cross multiply
    18,635.43x = 27,953.14 × 12,774.27
  4. Step 4: Simplify right side
    18,635.43x = 357,080,957.71
  5. Step 5: Solve for x
    x = 357,080,957.71/18,635.43
  6. Step 6: Final answer
    x = 19,161.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.