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Finding the Fourth Proportional to 69,194.34, 103,791.60 and 19,274.58

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Solution

The fourth proportional to 69,194.34, 103,791.60 and 19,274.58 is: 28,911.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,194.34 : 103,791.60 = 19,274.58 : x
  2. Step 2: Convert to fraction form
    69,194.34/103,791.60 = 19,274.58/x
  3. Step 3: Cross multiply
    69,194.34x = 103,791.60 × 19,274.58
  4. Step 4: Simplify right side
    69,194.34x = 2,000,539,497.53
  5. Step 5: Solve for x
    x = 2,000,539,497.53/69,194.34
  6. Step 6: Final answer
    x = 28,911.90

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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.