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Finding the Fourth Proportional to 54,906.70, 82,364.10 and 19,841.80

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Solution

The fourth proportional to 54,906.70, 82,364.10 and 19,841.80 is: 29,764.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,906.70 : 82,364.10 = 19,841.80 : x
  2. Step 2: Convert to fraction form
    54,906.70/82,364.10 = 19,841.80/x
  3. Step 3: Cross multiply
    54,906.70x = 82,364.10 × 19,841.80
  4. Step 4: Simplify right side
    54,906.70x = 1,634,251,999.38
  5. Step 5: Solve for x
    x = 1,634,251,999.38/54,906.70
  6. Step 6: Final answer
    x = 29,764.16

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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.