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Finding the Fourth Proportional to 13,992.56, 20,992.48 and 6,199.52

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Solution

The fourth proportional to 13,992.56, 20,992.48 and 6,199.52 is: 9,300.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.56 : 20,992.48 = 6,199.52 : x
  2. Step 2: Convert to fraction form
    13,992.56/20,992.48 = 6,199.52/x
  3. Step 3: Cross multiply
    13,992.56x = 20,992.48 × 6,199.52
  4. Step 4: Simplify right side
    13,992.56x = 130,143,299.61
  5. Step 5: Solve for x
    x = 130,143,299.61/13,992.56
  6. Step 6: Final answer
    x = 9,300.89

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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.