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Finding the Fourth Proportional to 18,668.68, 25,763.47 and 11,497.14

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Solution

The fourth proportional to 18,668.68, 25,763.47 and 11,497.14 is: 15,866.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.68 : 25,763.47 = 11,497.14 : x
  2. Step 2: Convert to fraction form
    18,668.68/25,763.47 = 11,497.14/x
  3. Step 3: Cross multiply
    18,668.68x = 25,763.47 × 11,497.14
  4. Step 4: Simplify right side
    18,668.68x = 296,206,192.73
  5. Step 5: Solve for x
    x = 296,206,192.73/18,668.68
  6. Step 6: Final answer
    x = 15,866.48

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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.