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Finding the Fourth Proportional to 228,706.74, 315,610.58 and 126,731.34

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Solution

The fourth proportional to 228,706.74, 315,610.58 and 126,731.34 is: 174,886.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,706.74 : 315,610.58 = 126,731.34 : x
  2. Step 2: Convert to fraction form
    228,706.74/315,610.58 = 126,731.34/x
  3. Step 3: Cross multiply
    228,706.74x = 315,610.58 × 126,731.34
  4. Step 4: Simplify right side
    228,706.74x = 39,997,751,721.58
  5. Step 5: Solve for x
    x = 39,997,751,721.58/228,706.74
  6. Step 6: Final answer
    x = 174,886.63

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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.