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Finding the Fourth Proportional to 118,814.44, 163,958.90 and 71,039.56

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Solution

The fourth proportional to 118,814.44, 163,958.90 and 71,039.56 is: 98,031.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,814.44 : 163,958.90 = 71,039.56 : x
  2. Step 2: Convert to fraction form
    118,814.44/163,958.90 = 71,039.56/x
  3. Step 3: Cross multiply
    118,814.44x = 163,958.90 × 71,039.56
  4. Step 4: Simplify right side
    118,814.44x = 11,647,568,114.08
  5. Step 5: Solve for x
    x = 11,647,568,114.08/118,814.44
  6. Step 6: Final answer
    x = 98,031.59

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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.