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Finding the Fourth Proportional to 167,489.40, 251,234.10 and 155,679.60

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Solution

The fourth proportional to 167,489.40, 251,234.10 and 155,679.60 is: 233,519.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,489.40 : 251,234.10 = 155,679.60 : x
  2. Step 2: Convert to fraction form
    167,489.40/251,234.10 = 155,679.60/x
  3. Step 3: Cross multiply
    167,489.40x = 251,234.10 × 155,679.60
  4. Step 4: Simplify right side
    167,489.40x = 39,112,024,194.36
  5. Step 5: Solve for x
    x = 39,112,024,194.36/167,489.40
  6. Step 6: Final answer
    x = 233,519.40

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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.