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Finding the Fourth Proportional to 71,714.80, 107,557.80 and 34,274.80

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Solution

The fourth proportional to 71,714.80, 107,557.80 and 34,274.80 is: 51,405.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,714.80 : 107,557.80 = 34,274.80 : x
  2. Step 2: Convert to fraction form
    71,714.80/107,557.80 = 34,274.80/x
  3. Step 3: Cross multiply
    71,714.80x = 107,557.80 × 34,274.80
  4. Step 4: Simplify right side
    71,714.80x = 3,686,522,083.44
  5. Step 5: Solve for x
    x = 3,686,522,083.44/71,714.80
  6. Step 6: Final answer
    x = 51,405.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.