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Finding the Fourth Proportional to 217,893.78, 326,634.12 and 99,494.46

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Solution

The fourth proportional to 217,893.78, 326,634.12 and 99,494.46 is: 149,147.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,893.78 : 326,634.12 = 99,494.46 : x
  2. Step 2: Convert to fraction form
    217,893.78/326,634.12 = 99,494.46/x
  3. Step 3: Cross multiply
    217,893.78x = 326,634.12 × 99,494.46
  4. Step 4: Simplify right side
    217,893.78x = 32,498,285,386.98
  5. Step 5: Solve for x
    x = 32,498,285,386.98/217,893.78
  6. Step 6: Final answer
    x = 149,147.38

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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.