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Finding the Fourth Proportional to 167,768.56, 251,808.36 and 84,720.88

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Solution

The fourth proportional to 167,768.56, 251,808.36 and 84,720.88 is: 127,159.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,768.56 : 251,808.36 = 84,720.88 : x
  2. Step 2: Convert to fraction form
    167,768.56/251,808.36 = 84,720.88/x
  3. Step 3: Cross multiply
    167,768.56x = 251,808.36 × 84,720.88
  4. Step 4: Simplify right side
    167,768.56x = 21,333,425,850.56
  5. Step 5: Solve for x
    x = 21,333,425,850.56/167,768.56
  6. Step 6: Final answer
    x = 127,159.86

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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.