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Finding the Fourth Proportional to 839,892.80, 1,259,843.83 and 208,806.61

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Solution

The fourth proportional to 839,892.80, 1,259,843.83 and 208,806.61 is: 313,211.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,892.80 : 1,259,843.83 = 208,806.61 : x
  2. Step 2: Convert to fraction form
    839,892.80/1,259,843.83 = 208,806.61/x
  3. Step 3: Cross multiply
    839,892.80x = 1,259,843.83 × 208,806.61
  4. Step 4: Simplify right side
    839,892.80x = 263,063,717,962.30
  5. Step 5: Solve for x
    x = 263,063,717,962.30/839,892.80
  6. Step 6: Final answer
    x = 313,211.07

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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.