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Finding the Fourth Proportional to 61,754.78, 85,221.37 and 33,460.54

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Solution

The fourth proportional to 61,754.78, 85,221.37 and 33,460.54 is: 46,175.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,754.78 : 85,221.37 = 33,460.54 : x
  2. Step 2: Convert to fraction form
    61,754.78/85,221.37 = 33,460.54/x
  3. Step 3: Cross multiply
    61,754.78x = 85,221.37 × 33,460.54
  4. Step 4: Simplify right side
    61,754.78x = 2,851,553,059.74
  5. Step 5: Solve for x
    x = 2,851,553,059.74/61,754.78
  6. Step 6: Final answer
    x = 46,175.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.