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Finding the Fourth Proportional to 18,808.81, 28,193.33 and 6,954.97

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Solution

The fourth proportional to 18,808.81, 28,193.33 and 6,954.97 is: 10,425.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.81 : 28,193.33 = 6,954.97 : x
  2. Step 2: Convert to fraction form
    18,808.81/28,193.33 = 6,954.97/x
  3. Step 3: Cross multiply
    18,808.81x = 28,193.33 × 6,954.97
  4. Step 4: Simplify right side
    18,808.81x = 196,083,724.99
  5. Step 5: Solve for x
    x = 196,083,724.99/18,808.81
  6. Step 6: Final answer
    x = 10,425.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.