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Finding the Fourth Proportional to 839,297.20, 1,259,317.88 and 439,843

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Solution

The fourth proportional to 839,297.20, 1,259,317.88 and 439,843 is: 659,959.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,297.20 : 1,259,317.88 = 439,843 : x
  2. Step 2: Convert to fraction form
    839,297.20/1,259,317.88 = 439,843/x
  3. Step 3: Cross multiply
    839,297.20x = 1,259,317.88 × 439,843
  4. Step 4: Simplify right side
    839,297.20x = 553,902,154,292.84
  5. Step 5: Solve for x
    x = 553,902,154,292.84/839,297.20
  6. Step 6: Final answer
    x = 659,959.49

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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.