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Finding the Fourth Proportional to 13,793.11, 20,699.93 and 6,776.89

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Solution

The fourth proportional to 13,793.11, 20,699.93 and 6,776.89 is: 10,170.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,793.11 : 20,699.93 = 6,776.89 : x
  2. Step 2: Convert to fraction form
    13,793.11/20,699.93 = 6,776.89/x
  3. Step 3: Cross multiply
    13,793.11x = 20,699.93 × 6,776.89
  4. Step 4: Simplify right side
    13,793.11x = 140,281,148.62
  5. Step 5: Solve for x
    x = 140,281,148.62/13,793.11
  6. Step 6: Final answer
    x = 10,170.38

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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.