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Finding the Fourth Proportional to 61,930.80, 85,463.10 and 33,635.88

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Solution

The fourth proportional to 61,930.80, 85,463.10 and 33,635.88 is: 46,416.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,930.80 : 85,463.10 = 33,635.88 : x
  2. Step 2: Convert to fraction form
    61,930.80/85,463.10 = 33,635.88/x
  3. Step 3: Cross multiply
    61,930.80x = 85,463.10 × 33,635.88
  4. Step 4: Simplify right side
    61,930.80x = 2,874,626,576.03
  5. Step 5: Solve for x
    x = 2,874,626,576.03/61,930.80
  6. Step 6: Final answer
    x = 46,416.75

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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.