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Finding the Fourth Proportional to 18,620.97, 25,696.95 and 10,237.47

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Solution

The fourth proportional to 18,620.97, 25,696.95 and 10,237.47 is: 14,127.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.97 : 25,696.95 = 10,237.47 : x
  2. Step 2: Convert to fraction form
    18,620.97/25,696.95 = 10,237.47/x
  3. Step 3: Cross multiply
    18,620.97x = 25,696.95 × 10,237.47
  4. Step 4: Simplify right side
    18,620.97x = 263,071,754.72
  5. Step 5: Solve for x
    x = 263,071,754.72/18,620.97
  6. Step 6: Final answer
    x = 14,127.71

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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.