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Finding the Fourth Proportional to 1,919,676,873.59, 2,876,987,045.77 and 812,912,253.78

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Solution

The fourth proportional to 1,919,676,873.59, 2,876,987,045.77 and 812,912,253.78 is: 1,218,297,753.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919,676,873.59 : 2,876,987,045.77 = 812,912,253.78 : x
  2. Step 2: Convert to fraction form
    1,919,676,873.59/2,876,987,045.77 = 812,912,253.78/x
  3. Step 3: Cross multiply
    1,919,676,873.59x = 2,876,987,045.77 × 812,912,253.78
  4. Step 4: Simplify right side
    1,919,676,873.59x = 2,338,738,023,470,640,640
  5. Step 5: Solve for x
    x = 2,338,738,023,470,640,640/1,919,676,873.59
  6. Step 6: Final answer
    x = 1,218,297,753.99

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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.