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Finding the Fourth Proportional to 251,687.93, 347,325.11 and 136,963.60

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Solution

The fourth proportional to 251,687.93, 347,325.11 and 136,963.60 is: 189,007.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,687.93 : 347,325.11 = 136,963.60 : x
  2. Step 2: Convert to fraction form
    251,687.93/347,325.11 = 136,963.60/x
  3. Step 3: Cross multiply
    251,687.93x = 347,325.11 × 136,963.60
  4. Step 4: Simplify right side
    251,687.93x = 47,570,898,212.56
  5. Step 5: Solve for x
    x = 47,570,898,212.56/251,687.93
  6. Step 6: Final answer
    x = 189,007.47

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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.