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Finding the Fourth Proportional to 17,861.87, 26,790.90 and 7,332.99

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Solution

The fourth proportional to 17,861.87, 26,790.90 and 7,332.99 is: 10,998.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,861.87 : 26,790.90 = 7,332.99 : x
  2. Step 2: Convert to fraction form
    17,861.87/26,790.90 = 7,332.99/x
  3. Step 3: Cross multiply
    17,861.87x = 26,790.90 × 7,332.99
  4. Step 4: Simplify right side
    17,861.87x = 196,457,401.79
  5. Step 5: Solve for x
    x = 196,457,401.79/17,861.87
  6. Step 6: Final answer
    x = 10,998.71

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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.