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Finding the Fourth Proportional to 684,396.86, 944,538.60 and 394,018.74

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Solution

The fourth proportional to 684,396.86, 944,538.60 and 394,018.74 is: 543,786.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,396.86 : 944,538.60 = 394,018.74 : x
  2. Step 2: Convert to fraction form
    684,396.86/944,538.60 = 394,018.74/x
  3. Step 3: Cross multiply
    684,396.86x = 944,538.60 × 394,018.74
  4. Step 4: Simplify right side
    684,396.86x = 372,165,910,530.93
  5. Step 5: Solve for x
    x = 372,165,910,530.93/684,396.86
  6. Step 6: Final answer
    x = 543,786.70

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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.