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Finding the Fourth Proportional to 167,688, 231,410.34 and 91,207.65

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Solution

The fourth proportional to 167,688, 231,410.34 and 91,207.65 is: 125,867.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,688 : 231,410.34 = 91,207.65 : x
  2. Step 2: Convert to fraction form
    167,688/231,410.34 = 91,207.65/x
  3. Step 3: Cross multiply
    167,688x = 231,410.34 × 91,207.65
  4. Step 4: Simplify right side
    167,688x = 21,106,393,297.10
  5. Step 5: Solve for x
    x = 21,106,393,297.10/167,688
  6. Step 6: Final answer
    x = 125,867.05

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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.