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Finding the Fourth Proportional to 197,906.78, 296,852.87 and 85,615.26

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Solution

The fourth proportional to 197,906.78, 296,852.87 and 85,615.26 is: 128,419.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,906.78 : 296,852.87 = 85,615.26 : x
  2. Step 2: Convert to fraction form
    197,906.78/296,852.87 = 85,615.26/x
  3. Step 3: Cross multiply
    197,906.78x = 296,852.87 × 85,615.26
  4. Step 4: Simplify right side
    197,906.78x = 25,415,135,218.72
  5. Step 5: Solve for x
    x = 25,415,135,218.72/197,906.78
  6. Step 6: Final answer
    x = 128,419.73

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1.5x scale

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.