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Finding the Fourth Proportional to 8,609.50, 12,912.55 and 2,367.91

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Solution

The fourth proportional to 8,609.50, 12,912.55 and 2,367.91 is: 3,551.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.50 : 12,912.55 = 2,367.91 : x
  2. Step 2: Convert to fraction form
    8,609.50/12,912.55 = 2,367.91/x
  3. Step 3: Cross multiply
    8,609.50x = 12,912.55 × 2,367.91
  4. Step 4: Simplify right side
    8,609.50x = 30,575,756.27
  5. Step 5: Solve for x
    x = 30,575,756.27/8,609.50
  6. Step 6: Final answer
    x = 3,551.40

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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.