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Finding the Fourth Proportional to 61,651.78, 85,079.44 and 33,357.47

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Solution

The fourth proportional to 61,651.78, 85,079.44 and 33,357.47 is: 46,033.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,651.78 : 85,079.44 = 33,357.47 : x
  2. Step 2: Convert to fraction form
    61,651.78/85,079.44 = 33,357.47/x
  3. Step 3: Cross multiply
    61,651.78x = 85,079.44 × 33,357.47
  4. Step 4: Simplify right side
    61,651.78x = 2,838,034,442.02
  5. Step 5: Solve for x
    x = 2,838,034,442.02/61,651.78
  6. Step 6: Final answer
    x = 46,033.30

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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.