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Finding the Fourth Proportional to 239,631.50, 330,691.48 and 133,647.50

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Solution

The fourth proportional to 239,631.50, 330,691.48 and 133,647.50 is: 184,433.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,631.50 : 330,691.48 = 133,647.50 : x
  2. Step 2: Convert to fraction form
    239,631.50/330,691.48 = 133,647.50/x
  3. Step 3: Cross multiply
    239,631.50x = 330,691.48 × 133,647.50
  4. Step 4: Simplify right side
    239,631.50x = 44,196,089,573.30
  5. Step 5: Solve for x
    x = 44,196,089,573.30/239,631.50
  6. Step 6: Final answer
    x = 184,433.56

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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.