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Finding the Fourth Proportional to 1,998,948.78, 2,758,614.57 and 1,093,530.78

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Solution

The fourth proportional to 1,998,948.78, 2,758,614.57 and 1,093,530.78 is: 1,509,108.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998,948.78 : 2,758,614.57 = 1,093,530.78 : x
  2. Step 2: Convert to fraction form
    1,998,948.78/2,758,614.57 = 1,093,530.78/x
  3. Step 3: Cross multiply
    1,998,948.78x = 2,758,614.57 × 1,093,530.78
  4. Step 4: Simplify right side
    1,998,948.78x = 3,016,629,942,451.46
  5. Step 5: Solve for x
    x = 3,016,629,942,451.46/1,998,948.78
  6. Step 6: Final answer
    x = 1,509,108.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.