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Finding the Fourth Proportional to 10,679.76, 16,019.64 and 4,109.04

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Solution

The fourth proportional to 10,679.76, 16,019.64 and 4,109.04 is: 6,163.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,679.76 : 16,019.64 = 4,109.04 : x
  2. Step 2: Convert to fraction form
    10,679.76/16,019.64 = 4,109.04/x
  3. Step 3: Cross multiply
    10,679.76x = 16,019.64 × 4,109.04
  4. Step 4: Simplify right side
    10,679.76x = 65,825,341.55
  5. Step 5: Solve for x
    x = 65,825,341.55/10,679.76
  6. Step 6: Final answer
    x = 6,163.56

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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.