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Finding the Fourth Proportional to 316,236.56, 474,361.74 and 126,786.14

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Solution

The fourth proportional to 316,236.56, 474,361.74 and 126,786.14 is: 190,181.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,236.56 : 474,361.74 = 126,786.14 : x
  2. Step 2: Convert to fraction form
    316,236.56/474,361.74 = 126,786.14/x
  3. Step 3: Cross multiply
    316,236.56x = 474,361.74 × 126,786.14
  4. Step 4: Simplify right side
    316,236.56x = 60,142,493,978.28
  5. Step 5: Solve for x
    x = 60,142,493,978.28/316,236.56
  6. Step 6: Final answer
    x = 190,181.98

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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.