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Finding the Fourth Proportional to 1,277,226, 1,915,839 and 519,479.73

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Solution

The fourth proportional to 1,277,226, 1,915,839 and 519,479.73 is: 779,219.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,226 : 1,915,839 = 519,479.73 : x
  2. Step 2: Convert to fraction form
    1,277,226/1,915,839 = 519,479.73/x
  3. Step 3: Cross multiply
    1,277,226x = 1,915,839 × 519,479.73
  4. Step 4: Simplify right side
    1,277,226x = 995,239,526,443.47
  5. Step 5: Solve for x
    x = 995,239,526,443.47/1,277,226
  6. Step 6: Final answer
    x = 779,219.60

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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.