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Finding the Fourth Proportional to 8,674.48, 11,958.87 and 5,486.18

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Solution

The fourth proportional to 8,674.48, 11,958.87 and 5,486.18 is: 7,563.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.48 : 11,958.87 = 5,486.18 : x
  2. Step 2: Convert to fraction form
    8,674.48/11,958.87 = 5,486.18/x
  3. Step 3: Cross multiply
    8,674.48x = 11,958.87 × 5,486.18
  4. Step 4: Simplify right side
    8,674.48x = 65,608,485.99
  5. Step 5: Solve for x
    x = 65,608,485.99/8,674.48
  6. Step 6: Final answer
    x = 7,563.40

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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.