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Finding the Fourth Proportional to 778,843.01, 1,074,857.34 and 434,745.90

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Solution

The fourth proportional to 778,843.01, 1,074,857.34 and 434,745.90 is: 599,979.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,843.01 : 1,074,857.34 = 434,745.90 : x
  2. Step 2: Convert to fraction form
    778,843.01/1,074,857.34 = 434,745.90/x
  3. Step 3: Cross multiply
    778,843.01x = 1,074,857.34 × 434,745.90
  4. Step 4: Simplify right side
    778,843.01x = 467,289,821,649.91
  5. Step 5: Solve for x
    x = 467,289,821,649.91/778,843.01
  6. Step 6: Final answer
    x = 599,979.48

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1.5x scale

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.