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Finding the Fourth Proportional to 9,396.66, 12,958.44 and 5,619.21

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Solution

The fourth proportional to 9,396.66, 12,958.44 and 5,619.21 is: 7,749.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,396.66 : 12,958.44 = 5,619.21 : x
  2. Step 2: Convert to fraction form
    9,396.66/12,958.44 = 5,619.21/x
  3. Step 3: Cross multiply
    9,396.66x = 12,958.44 × 5,619.21
  4. Step 4: Simplify right side
    9,396.66x = 72,816,228.03
  5. Step 5: Solve for x
    x = 72,816,228.03/9,396.66
  6. Step 6: Final answer
    x = 7,749.16

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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.