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Finding the Fourth Proportional to 136,614.72, 188,509.44 and 80,043.84

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Solution

The fourth proportional to 136,614.72, 188,509.44 and 80,043.84 is: 110,449.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,614.72 : 188,509.44 = 80,043.84 : x
  2. Step 2: Convert to fraction form
    136,614.72/188,509.44 = 80,043.84/x
  3. Step 3: Cross multiply
    136,614.72x = 188,509.44 × 80,043.84
  4. Step 4: Simplify right side
    136,614.72x = 15,089,019,453.85
  5. Step 5: Solve for x
    x = 15,089,019,453.85/136,614.72
  6. Step 6: Final answer
    x = 110,449.44

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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.