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Finding the Fourth Proportional to 8,674.74, 11,974.08 and 5,271.74

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Solution

The fourth proportional to 8,674.74, 11,974.08 and 5,271.74 is: 7,276.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.74 : 11,974.08 = 5,271.74 : x
  2. Step 2: Convert to fraction form
    8,674.74/11,974.08 = 5,271.74/x
  3. Step 3: Cross multiply
    8,674.74x = 11,974.08 × 5,271.74
  4. Step 4: Simplify right side
    8,674.74x = 63,124,217.80
  5. Step 5: Solve for x
    x = 63,124,217.80/8,674.74
  6. Step 6: Final answer
    x = 7,276.78

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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.