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Finding the Fourth Proportional to 231,661.20, 347,232.60 and 98,518.80

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Solution

The fourth proportional to 231,661.20, 347,232.60 and 98,518.80 is: 147,667.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,661.20 : 347,232.60 = 98,518.80 : x
  2. Step 2: Convert to fraction form
    231,661.20/347,232.60 = 98,518.80/x
  3. Step 3: Cross multiply
    231,661.20x = 347,232.60 × 98,518.80
  4. Step 4: Simplify right side
    231,661.20x = 34,208,939,072.88
  5. Step 5: Solve for x
    x = 34,208,939,072.88/231,661.20
  6. Step 6: Final answer
    x = 147,667.97

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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.