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Finding the Fourth Proportional to 3,676.46, 5,516.10 and 1,211.22

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Solution

The fourth proportional to 3,676.46, 5,516.10 and 1,211.22 is: 1,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,676.46 : 5,516.10 = 1,211.22 : x
  2. Step 2: Convert to fraction form
    3,676.46/5,516.10 = 1,211.22/x
  3. Step 3: Cross multiply
    3,676.46x = 5,516.10 × 1,211.22
  4. Step 4: Simplify right side
    3,676.46x = 6,681,210.64
  5. Step 5: Solve for x
    x = 6,681,210.64/3,676.46
  6. Step 6: Final answer
    x = 1,817.30

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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.