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Finding the Fourth Proportional to 17,921.81, 26,862.43 and 9,022.99

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Solution

The fourth proportional to 17,921.81, 26,862.43 and 9,022.99 is: 13,524.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,921.81 : 26,862.43 = 9,022.99 : x
  2. Step 2: Convert to fraction form
    17,921.81/26,862.43 = 9,022.99/x
  3. Step 3: Cross multiply
    17,921.81x = 26,862.43 × 9,022.99
  4. Step 4: Simplify right side
    17,921.81x = 242,379,504.42
  5. Step 5: Solve for x
    x = 242,379,504.42/17,921.81
  6. Step 6: Final answer
    x = 13,524.28

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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.