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Finding the Fourth Proportional to 18,636.94, 25,718.98 and 10,253.44

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Solution

The fourth proportional to 18,636.94, 25,718.98 and 10,253.44 is: 14,149.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.94 : 25,718.98 = 10,253.44 : x
  2. Step 2: Convert to fraction form
    18,636.94/25,718.98 = 10,253.44/x
  3. Step 3: Cross multiply
    18,636.94x = 25,718.98 × 10,253.44
  4. Step 4: Simplify right side
    18,636.94x = 263,707,928.36
  5. Step 5: Solve for x
    x = 263,707,928.36/18,636.94
  6. Step 6: Final answer
    x = 14,149.75

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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.