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Finding the Fourth Proportional to 131,662.40, 181,694.12 and 71,233.00

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Solution

The fourth proportional to 131,662.40, 181,694.12 and 71,233.00 is: 98,301.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,662.40 : 181,694.12 = 71,233.00 : x
  2. Step 2: Convert to fraction form
    131,662.40/181,694.12 = 71,233.00/x
  3. Step 3: Cross multiply
    131,662.40x = 181,694.12 × 71,233.00
  4. Step 4: Simplify right side
    131,662.40x = 12,942,616,439.56
  5. Step 5: Solve for x
    x = 12,942,616,439.56/131,662.40
  6. Step 6: Final answer
    x = 98,301.54

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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.