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Finding the Fourth Proportional to 9,168.81, 13,754.21 and 2,926.64

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Solution

The fourth proportional to 9,168.81, 13,754.21 and 2,926.64 is: 4,390.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,168.81 : 13,754.21 = 2,926.64 : x
  2. Step 2: Convert to fraction form
    9,168.81/13,754.21 = 2,926.64/x
  3. Step 3: Cross multiply
    9,168.81x = 13,754.21 × 2,926.64
  4. Step 4: Simplify right side
    9,168.81x = 40,253,621.15
  5. Step 5: Solve for x
    x = 40,253,621.15/9,168.81
  6. Step 6: Final answer
    x = 4,390.28

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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.