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Finding the Fourth Proportional to 61,914.48, 85,442.76 and 33,620.64

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Solution

The fourth proportional to 61,914.48, 85,442.76 and 33,620.64 is: 46,396.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,914.48 : 85,442.76 = 33,620.64 : x
  2. Step 2: Convert to fraction form
    61,914.48/85,442.76 = 33,620.64/x
  3. Step 3: Cross multiply
    61,914.48x = 85,442.76 × 33,620.64
  4. Step 4: Simplify right side
    61,914.48x = 2,872,640,274.57
  5. Step 5: Solve for x
    x = 2,872,640,274.57/61,914.48
  6. Step 6: Final answer
    x = 46,396.91

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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.