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Finding the Fourth Proportional to 167,285.16, 230,859.46 and 91,839.40

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Solution

The fourth proportional to 167,285.16, 230,859.46 and 91,839.40 is: 126,741.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,285.16 : 230,859.46 = 91,839.40 : x
  2. Step 2: Convert to fraction form
    167,285.16/230,859.46 = 91,839.40/x
  3. Step 3: Cross multiply
    167,285.16x = 230,859.46 × 91,839.40
  4. Step 4: Simplify right side
    167,285.16x = 21,201,994,290.72
  5. Step 5: Solve for x
    x = 21,201,994,290.72/167,285.16
  6. Step 6: Final answer
    x = 126,741.63

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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.