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Finding the Fourth Proportional to 8,651.42, 12,994.76 and 7,634.46

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Solution

The fourth proportional to 8,651.42, 12,994.76 and 7,634.46 is: 11,467.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651.42 : 12,994.76 = 7,634.46 : x
  2. Step 2: Convert to fraction form
    8,651.42/12,994.76 = 7,634.46/x
  3. Step 3: Cross multiply
    8,651.42x = 12,994.76 × 7,634.46
  4. Step 4: Simplify right side
    8,651.42x = 99,207,975.43
  5. Step 5: Solve for x
    x = 99,207,975.43/8,651.42
  6. Step 6: Final answer
    x = 11,467.25

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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.