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Finding the Fourth Proportional to 13,858.15, 20,786.67 and 4,624.15

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Solution

The fourth proportional to 13,858.15, 20,786.67 and 4,624.15 is: 6,936.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,858.15 : 20,786.67 = 4,624.15 : x
  2. Step 2: Convert to fraction form
    13,858.15/20,786.67 = 4,624.15/x
  3. Step 3: Cross multiply
    13,858.15x = 20,786.67 × 4,624.15
  4. Step 4: Simplify right side
    13,858.15x = 96,120,680.08
  5. Step 5: Solve for x
    x = 96,120,680.08/13,858.15
  6. Step 6: Final answer
    x = 6,936.04

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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.