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Finding the Fourth Proportional to 53,239.66, 79,842.21 and 17,691.44

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Solution

The fourth proportional to 53,239.66, 79,842.21 and 17,691.44 is: 26,531.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,239.66 : 79,842.21 = 17,691.44 : x
  2. Step 2: Convert to fraction form
    53,239.66/79,842.21 = 17,691.44/x
  3. Step 3: Cross multiply
    53,239.66x = 79,842.21 × 17,691.44
  4. Step 4: Simplify right side
    53,239.66x = 1,412,523,180.01
  5. Step 5: Solve for x
    x = 1,412,523,180.01/53,239.66
  6. Step 6: Final answer
    x = 26,531.41

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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.