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Finding the Fourth Proportional to 9,475.44, 13,082.20 and 8,478.99

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Solution

The fourth proportional to 9,475.44, 13,082.20 and 8,478.99 is: 11,706.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,475.44 : 13,082.20 = 8,478.99 : x
  2. Step 2: Convert to fraction form
    9,475.44/13,082.20 = 8,478.99/x
  3. Step 3: Cross multiply
    9,475.44x = 13,082.20 × 8,478.99
  4. Step 4: Simplify right side
    9,475.44x = 110,923,842.98
  5. Step 5: Solve for x
    x = 110,923,842.98/9,475.44
  6. Step 6: Final answer
    x = 11,706.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.