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Finding the Fourth Proportional to 8,674.15, 11,970.39 and 4,845.79

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Solution

The fourth proportional to 8,674.15, 11,970.39 and 4,845.79 is: 6,687.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.15 : 11,970.39 = 4,845.79 : x
  2. Step 2: Convert to fraction form
    8,674.15/11,970.39 = 4,845.79/x
  3. Step 3: Cross multiply
    8,674.15x = 11,970.39 × 4,845.79
  4. Step 4: Simplify right side
    8,674.15x = 58,005,912.08
  5. Step 5: Solve for x
    x = 58,005,912.08/8,674.15
  6. Step 6: Final answer
    x = 6,687.22

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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.