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Finding the Fourth Proportional to 684,451.62, 944,578.67 and 394,106.31

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Solution

The fourth proportional to 684,451.62, 944,578.67 and 394,106.31 is: 543,887.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,451.62 : 944,578.67 = 394,106.31 : x
  2. Step 2: Convert to fraction form
    684,451.62/944,578.67 = 394,106.31/x
  3. Step 3: Cross multiply
    684,451.62x = 944,578.67 × 394,106.31
  4. Step 4: Simplify right side
    684,451.62x = 372,264,412,167.88
  5. Step 5: Solve for x
    x = 372,264,412,167.88/684,451.62
  6. Step 6: Final answer
    x = 543,887.11

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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.