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Finding the Fourth Proportional to 4,674.66, 6,451 and 2,578.78

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Solution

The fourth proportional to 4,674.66, 6,451 and 2,578.78 is: 3,558.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,674.66 : 6,451 = 2,578.78 : x
  2. Step 2: Convert to fraction form
    4,674.66/6,451 = 2,578.78/x
  3. Step 3: Cross multiply
    4,674.66x = 6,451 × 2,578.78
  4. Step 4: Simplify right side
    4,674.66x = 16,635,709.78
  5. Step 5: Solve for x
    x = 16,635,709.78/4,674.66
  6. Step 6: Final answer
    x = 3,558.70

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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.