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Finding the Fourth Proportional to 251,954.67, 347,697.39 and 138,777.42

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Solution

The fourth proportional to 251,954.67, 347,697.39 and 138,777.42 is: 191,512.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,954.67 : 347,697.39 = 138,777.42 : x
  2. Step 2: Convert to fraction form
    251,954.67/347,697.39 = 138,777.42/x
  3. Step 3: Cross multiply
    251,954.67x = 347,697.39 × 138,777.42
  4. Step 4: Simplify right side
    251,954.67x = 48,252,546,724.93
  5. Step 5: Solve for x
    x = 48,252,546,724.93/251,954.67
  6. Step 6: Final answer
    x = 191,512.81

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1.5x scale

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.