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Finding the Fourth Proportional to 205,339.60, 308,009.40 and 193,934.80

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Solution

The fourth proportional to 205,339.60, 308,009.40 and 193,934.80 is: 290,902.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,339.60 : 308,009.40 = 193,934.80 : x
  2. Step 2: Convert to fraction form
    205,339.60/308,009.40 = 193,934.80/x
  3. Step 3: Cross multiply
    205,339.60x = 308,009.40 × 193,934.80
  4. Step 4: Simplify right side
    205,339.60x = 59,733,741,387.12
  5. Step 5: Solve for x
    x = 59,733,741,387.12/205,339.60
  6. Step 6: Final answer
    x = 290,902.20

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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.