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Finding the Fourth Proportional to 121,089.26, 167,104 and 67,376.54

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Solution

The fourth proportional to 121,089.26, 167,104 and 67,376.54 is: 92,980.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,089.26 : 167,104 = 67,376.54 : x
  2. Step 2: Convert to fraction form
    121,089.26/167,104 = 67,376.54/x
  3. Step 3: Cross multiply
    121,089.26x = 167,104 × 67,376.54
  4. Step 4: Simplify right side
    121,089.26x = 11,258,889,340.16
  5. Step 5: Solve for x
    x = 11,258,889,340.16/121,089.26
  6. Step 6: Final answer
    x = 92,980.08

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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.