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Finding the Fourth Proportional to 18,891.81, 28,450.17 and 16,456.05

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Solution

The fourth proportional to 18,891.81, 28,450.17 and 16,456.05 is: 24,782.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.81 : 28,450.17 = 16,456.05 : x
  2. Step 2: Convert to fraction form
    18,891.81/28,450.17 = 16,456.05/x
  3. Step 3: Cross multiply
    18,891.81x = 28,450.17 × 16,456.05
  4. Step 4: Simplify right side
    18,891.81x = 468,177,420.03
  5. Step 5: Solve for x
    x = 468,177,420.03/18,891.81
  6. Step 6: Final answer
    x = 24,782.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.