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Finding the Fourth Proportional to 16,947.20, 25,416.88 and 6,418.44

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Solution

The fourth proportional to 16,947.20, 25,416.88 and 6,418.44 is: 9,626.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,947.20 : 25,416.88 = 6,418.44 : x
  2. Step 2: Convert to fraction form
    16,947.20/25,416.88 = 6,418.44/x
  3. Step 3: Cross multiply
    16,947.20x = 25,416.88 × 6,418.44
  4. Step 4: Simplify right side
    16,947.20x = 163,136,719.27
  5. Step 5: Solve for x
    x = 163,136,719.27/16,947.20
  6. Step 6: Final answer
    x = 9,626.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.