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Finding the Fourth Proportional to 1,995,917.90, 2,754,367.80 and 1,078,147.04

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Solution

The fourth proportional to 1,995,917.90, 2,754,367.80 and 1,078,147.04 is: 1,487,843.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,995,917.90 : 2,754,367.80 = 1,078,147.04 : x
  2. Step 2: Convert to fraction form
    1,995,917.90/2,754,367.80 = 1,078,147.04/x
  3. Step 3: Cross multiply
    1,995,917.90x = 2,754,367.80 × 1,078,147.04
  4. Step 4: Simplify right side
    1,995,917.90x = 2,969,613,490,641.31
  5. Step 5: Solve for x
    x = 2,969,613,490,641.31/1,995,917.90
  6. Step 6: Final answer
    x = 1,487,843.51

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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.