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Finding the Fourth Proportional to 228,336.21, 315,096.21 and 126,365.97

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Solution

The fourth proportional to 228,336.21, 315,096.21 and 126,365.97 is: 174,380.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,336.21 : 315,096.21 = 126,365.97 : x
  2. Step 2: Convert to fraction form
    228,336.21/315,096.21 = 126,365.97/x
  3. Step 3: Cross multiply
    228,336.21x = 315,096.21 × 126,365.97
  4. Step 4: Simplify right side
    228,336.21x = 39,817,438,219.97
  5. Step 5: Solve for x
    x = 39,817,438,219.97/228,336.21
  6. Step 6: Final answer
    x = 174,380.74

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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.