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Finding the Fourth Proportional to 18,713.98, 28,091.19 and 16,647.22

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Solution

The fourth proportional to 18,713.98, 28,091.19 and 16,647.22 is: 24,988.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,713.98 : 28,091.19 = 16,647.22 : x
  2. Step 2: Convert to fraction form
    18,713.98/28,091.19 = 16,647.22/x
  3. Step 3: Cross multiply
    18,713.98x = 28,091.19 × 16,647.22
  4. Step 4: Simplify right side
    18,713.98x = 467,640,219.99
  5. Step 5: Solve for x
    x = 467,640,219.99/18,713.98
  6. Step 6: Final answer
    x = 24,988.82

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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.