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Finding the Fourth Proportional to 839,892.32, 1,259,843.11 and 208,806.14

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Solution

The fourth proportional to 839,892.32, 1,259,843.11 and 208,806.14 is: 313,210.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,892.32 : 1,259,843.11 = 208,806.14 : x
  2. Step 2: Convert to fraction form
    839,892.32/1,259,843.11 = 208,806.14/x
  3. Step 3: Cross multiply
    839,892.32x = 1,259,843.11 × 208,806.14
  4. Step 4: Simplify right side
    839,892.32x = 263,062,976,804.70
  5. Step 5: Solve for x
    x = 263,062,976,804.70/839,892.32
  6. Step 6: Final answer
    x = 313,210.36

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Double scale
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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.