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Finding the Fourth Proportional to 171,791.55, 237,002.36 and 115,221.15

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Solution

The fourth proportional to 171,791.55, 237,002.36 and 115,221.15 is: 158,958.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,791.55 : 237,002.36 = 115,221.15 : x
  2. Step 2: Convert to fraction form
    171,791.55/237,002.36 = 115,221.15/x
  3. Step 3: Cross multiply
    171,791.55x = 237,002.36 × 115,221.15
  4. Step 4: Simplify right side
    171,791.55x = 27,307,683,895.81
  5. Step 5: Solve for x
    x = 27,307,683,895.81/171,791.55
  6. Step 6: Final answer
    x = 158,958.25

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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.