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Finding the Fourth Proportional to 18,806.57, 25,953.15 and 10,423.07

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Solution

The fourth proportional to 18,806.57, 25,953.15 and 10,423.07 is: 14,383.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,806.57 : 25,953.15 = 10,423.07 : x
  2. Step 2: Convert to fraction form
    18,806.57/25,953.15 = 10,423.07/x
  3. Step 3: Cross multiply
    18,806.57x = 25,953.15 × 10,423.07
  4. Step 4: Simplify right side
    18,806.57x = 270,511,499.17
  5. Step 5: Solve for x
    x = 270,511,499.17/18,806.57
  6. Step 6: Final answer
    x = 14,383.88

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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.