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Finding the Fourth Proportional to 205,335.60, 308,003.40 and 193,930.80

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Solution

The fourth proportional to 205,335.60, 308,003.40 and 193,930.80 is: 290,896.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,335.60 : 308,003.40 = 193,930.80 : x
  2. Step 2: Convert to fraction form
    205,335.60/308,003.40 = 193,930.80/x
  3. Step 3: Cross multiply
    205,335.60x = 308,003.40 × 193,930.80
  4. Step 4: Simplify right side
    205,335.60x = 59,731,345,764.72
  5. Step 5: Solve for x
    x = 59,731,345,764.72/205,335.60
  6. Step 6: Final answer
    x = 290,896.20

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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.