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Finding the Fourth Proportional to 13,376.33, 20,019.72 and 13,199.32

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Solution

The fourth proportional to 13,376.33, 20,019.72 and 13,199.32 is: 19,754.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.33 : 20,019.72 = 13,199.32 : x
  2. Step 2: Convert to fraction form
    13,376.33/20,019.72 = 13,199.32/x
  3. Step 3: Cross multiply
    13,376.33x = 20,019.72 × 13,199.32
  4. Step 4: Simplify right side
    13,376.33x = 264,246,690.59
  5. Step 5: Solve for x
    x = 264,246,690.59/13,376.33
  6. Step 6: Final answer
    x = 19,754.80

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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.