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Finding the Fourth Proportional to 14,486.67, 19,992.60 and 8,113.86

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Solution

The fourth proportional to 14,486.67, 19,992.60 and 8,113.86 is: 11,197.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,486.67 : 19,992.60 = 8,113.86 : x
  2. Step 2: Convert to fraction form
    14,486.67/19,992.60 = 8,113.86/x
  3. Step 3: Cross multiply
    14,486.67x = 19,992.60 × 8,113.86
  4. Step 4: Simplify right side
    14,486.67x = 162,217,157.44
  5. Step 5: Solve for x
    x = 162,217,157.44/14,486.67
  6. Step 6: Final answer
    x = 11,197.68

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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.