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Finding the Fourth Proportional to 54,452.67, 81,700.13 and 21,196.09

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Solution

The fourth proportional to 54,452.67, 81,700.13 and 21,196.09 is: 31,802.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,452.67 : 81,700.13 = 21,196.09 : x
  2. Step 2: Convert to fraction form
    54,452.67/81,700.13 = 21,196.09/x
  3. Step 3: Cross multiply
    54,452.67x = 81,700.13 × 21,196.09
  4. Step 4: Simplify right side
    54,452.67x = 1,731,723,308.49
  5. Step 5: Solve for x
    x = 1,731,723,308.49/54,452.67
  6. Step 6: Final answer
    x = 31,802.36

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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.