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Finding the Fourth Proportional to 211,992.55, 317,791.18 and 71,653.03

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Solution

The fourth proportional to 211,992.55, 317,791.18 and 71,653.03 is: 107,412.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,992.55 : 317,791.18 = 71,653.03 : x
  2. Step 2: Convert to fraction form
    211,992.55/317,791.18 = 71,653.03/x
  3. Step 3: Cross multiply
    211,992.55x = 317,791.18 × 71,653.03
  4. Step 4: Simplify right side
    211,992.55x = 22,770,700,954.28
  5. Step 5: Solve for x
    x = 22,770,700,954.28/211,992.55
  6. Step 6: Final answer
    x = 107,412.74

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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.