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Finding the Fourth Proportional to 8,981.79, 13,471.99 and 3,715.44

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Solution

The fourth proportional to 8,981.79, 13,471.99 and 3,715.44 is: 5,572.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.79 : 13,471.99 = 3,715.44 : x
  2. Step 2: Convert to fraction form
    8,981.79/13,471.99 = 3,715.44/x
  3. Step 3: Cross multiply
    8,981.79x = 13,471.99 × 3,715.44
  4. Step 4: Simplify right side
    8,981.79x = 50,054,310.72
  5. Step 5: Solve for x
    x = 50,054,310.72/8,981.79
  6. Step 6: Final answer
    x = 5,572.87

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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.