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Finding the Fourth Proportional to 18,855.99, 26,024.49 and 10,902.85

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Solution

The fourth proportional to 18,855.99, 26,024.49 and 10,902.85 is: 15,047.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.99 : 26,024.49 = 10,902.85 : x
  2. Step 2: Convert to fraction form
    18,855.99/26,024.49 = 10,902.85/x
  3. Step 3: Cross multiply
    18,855.99x = 26,024.49 × 10,902.85
  4. Step 4: Simplify right side
    18,855.99x = 283,741,192.12
  5. Step 5: Solve for x
    x = 283,741,192.12/18,855.99
  6. Step 6: Final answer
    x = 15,047.80

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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.