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Finding the Fourth Proportional to 351,644.29, 485,240.25 and 198,695.73

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Solution

The fourth proportional to 351,644.29, 485,240.25 and 198,695.73 is: 274,183.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,644.29 : 485,240.25 = 198,695.73 : x
  2. Step 2: Convert to fraction form
    351,644.29/485,240.25 = 198,695.73/x
  3. Step 3: Cross multiply
    351,644.29x = 485,240.25 × 198,695.73
  4. Step 4: Simplify right side
    351,644.29x = 96,415,168,263.89
  5. Step 5: Solve for x
    x = 96,415,168,263.89/351,644.29
  6. Step 6: Final answer
    x = 274,183.80

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1.5x scale

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.