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Finding the Fourth Proportional to 8,812.74, 12,169.74 and 5,674.44

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Solution

The fourth proportional to 8,812.74, 12,169.74 and 5,674.44 is: 7,835.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.74 : 12,169.74 = 5,674.44 : x
  2. Step 2: Convert to fraction form
    8,812.74/12,169.74 = 5,674.44/x
  3. Step 3: Cross multiply
    8,812.74x = 12,169.74 × 5,674.44
  4. Step 4: Simplify right side
    8,812.74x = 69,056,459.45
  5. Step 5: Solve for x
    x = 69,056,459.45/8,812.74
  6. Step 6: Final answer
    x = 7,835.98

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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.