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Finding the Fourth Proportional to 11,958.90, 17,931.52 and 3,636.46

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Solution

The fourth proportional to 11,958.90, 17,931.52 and 3,636.46 is: 5,452.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,958.90 : 17,931.52 = 3,636.46 : x
  2. Step 2: Convert to fraction form
    11,958.90/17,931.52 = 3,636.46/x
  3. Step 3: Cross multiply
    11,958.90x = 17,931.52 × 3,636.46
  4. Step 4: Simplify right side
    11,958.90x = 65,207,255.22
  5. Step 5: Solve for x
    x = 65,207,255.22/11,958.90
  6. Step 6: Final answer
    x = 5,452.61

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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.