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Finding the Fourth Proportional to 29,654.31, 40,939.87 and 19,611.88

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Solution

The fourth proportional to 29,654.31, 40,939.87 and 19,611.88 is: 27,075.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,654.31 : 40,939.87 = 19,611.88 : x
  2. Step 2: Convert to fraction form
    29,654.31/40,939.87 = 19,611.88/x
  3. Step 3: Cross multiply
    29,654.31x = 40,939.87 × 19,611.88
  4. Step 4: Simplify right side
    29,654.31x = 802,907,819.80
  5. Step 5: Solve for x
    x = 802,907,819.80/29,654.31
  6. Step 6: Final answer
    x = 27,075.59

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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.