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Finding the Fourth Proportional to 1,228,791, 1,843,279.83 and 418,923.84

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Solution

The fourth proportional to 1,228,791, 1,843,279.83 and 418,923.84 is: 628,417.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228,791 : 1,843,279.83 = 418,923.84 : x
  2. Step 2: Convert to fraction form
    1,228,791/1,843,279.83 = 418,923.84/x
  3. Step 3: Cross multiply
    1,228,791x = 1,843,279.83 × 418,923.84
  4. Step 4: Simplify right side
    1,228,791x = 772,193,864,578.15
  5. Step 5: Solve for x
    x = 772,193,864,578.15/1,228,791
  6. Step 6: Final answer
    x = 628,417.58

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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.