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Finding the Fourth Proportional to 121,470.64, 167,628.34 and 67,023.31

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Solution

The fourth proportional to 121,470.64, 167,628.34 and 67,023.31 is: 92,491.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,470.64 : 167,628.34 = 67,023.31 : x
  2. Step 2: Convert to fraction form
    121,470.64/167,628.34 = 67,023.31/x
  3. Step 3: Cross multiply
    121,470.64x = 167,628.34 × 67,023.31
  4. Step 4: Simplify right side
    121,470.64x = 11,235,005,450.82
  5. Step 5: Solve for x
    x = 11,235,005,450.82/121,470.64
  6. Step 6: Final answer
    x = 92,491.53

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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.