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Finding the Fourth Proportional to 18,751.76, 25,882.39 and 11,673.98

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Solution

The fourth proportional to 18,751.76, 25,882.39 and 11,673.98 is: 16,113.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.76 : 25,882.39 = 11,673.98 : x
  2. Step 2: Convert to fraction form
    18,751.76/25,882.39 = 11,673.98/x
  3. Step 3: Cross multiply
    18,751.76x = 25,882.39 × 11,673.98
  4. Step 4: Simplify right side
    18,751.76x = 302,150,315.43
  5. Step 5: Solve for x
    x = 302,150,315.43/18,751.76
  6. Step 6: Final answer
    x = 16,113.18

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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.