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Finding the Fourth Proportional to 17,715.75, 26,571.99 and 5,403.75

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Solution

The fourth proportional to 17,715.75, 26,571.99 and 5,403.75 is: 8,105.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,715.75 : 26,571.99 = 5,403.75 : x
  2. Step 2: Convert to fraction form
    17,715.75/26,571.99 = 5,403.75/x
  3. Step 3: Cross multiply
    17,715.75x = 26,571.99 × 5,403.75
  4. Step 4: Simplify right side
    17,715.75x = 143,588,258.10
  5. Step 5: Solve for x
    x = 143,588,258.10/17,715.75
  6. Step 6: Final answer
    x = 8,105.12

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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.