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Finding the Fourth Proportional to 13,361.76, 20,065.32 and 11,608.92

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Solution

The fourth proportional to 13,361.76, 20,065.32 and 11,608.92 is: 17,433.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361.76 : 20,065.32 = 11,608.92 : x
  2. Step 2: Convert to fraction form
    13,361.76/20,065.32 = 11,608.92/x
  3. Step 3: Cross multiply
    13,361.76x = 20,065.32 × 11,608.92
  4. Step 4: Simplify right side
    13,361.76x = 232,936,694.65
  5. Step 5: Solve for x
    x = 232,936,694.65/13,361.76
  6. Step 6: Final answer
    x = 17,433.08

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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.