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Finding the Fourth Proportional to 18,620.68, 25,696.20 and 10,237

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Solution

The fourth proportional to 18,620.68, 25,696.20 and 10,237 is: 14,126.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.68 : 25,696.20 = 10,237 : x
  2. Step 2: Convert to fraction form
    18,620.68/25,696.20 = 10,237/x
  3. Step 3: Cross multiply
    18,620.68x = 25,696.20 × 10,237
  4. Step 4: Simplify right side
    18,620.68x = 263,051,999.40
  5. Step 5: Solve for x
    x = 263,051,999.40/18,620.68
  6. Step 6: Final answer
    x = 14,126.87

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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.