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Finding the Fourth Proportional to 17,847.80, 26,771.88 and 7,315.11

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Solution

The fourth proportional to 17,847.80, 26,771.88 and 7,315.11 is: 10,972.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,847.80 : 26,771.88 = 7,315.11 : x
  2. Step 2: Convert to fraction form
    17,847.80/26,771.88 = 7,315.11/x
  3. Step 3: Cross multiply
    17,847.80x = 26,771.88 × 7,315.11
  4. Step 4: Simplify right side
    17,847.80x = 195,839,247.11
  5. Step 5: Solve for x
    x = 195,839,247.11/17,847.80
  6. Step 6: Final answer
    x = 10,972.74

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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.