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Finding the Fourth Proportional to 54,497.61, 81,767.17 and 18,962.88

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Solution

The fourth proportional to 54,497.61, 81,767.17 and 18,962.88 is: 28,451.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,497.61 : 81,767.17 = 18,962.88 : x
  2. Step 2: Convert to fraction form
    54,497.61/81,767.17 = 18,962.88/x
  3. Step 3: Cross multiply
    54,497.61x = 81,767.17 × 18,962.88
  4. Step 4: Simplify right side
    54,497.61x = 1,550,540,749.73
  5. Step 5: Solve for x
    x = 1,550,540,749.73/54,497.61
  6. Step 6: Final answer
    x = 28,451.54

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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.