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Finding the Fourth Proportional to 131,009.80, 196,344.60 and 60,739.60

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Solution

The fourth proportional to 131,009.80, 196,344.60 and 60,739.60 is: 91,030.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,009.80 : 196,344.60 = 60,739.60 : x
  2. Step 2: Convert to fraction form
    131,009.80/196,344.60 = 60,739.60/x
  3. Step 3: Cross multiply
    131,009.80x = 196,344.60 × 60,739.60
  4. Step 4: Simplify right side
    131,009.80x = 11,925,892,466.16
  5. Step 5: Solve for x
    x = 11,925,892,466.16/131,009.80
  6. Step 6: Final answer
    x = 91,030.54

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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.