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Finding the Fourth Proportional to 121,624.75, 167,749.79 and 104,657.43

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Solution

The fourth proportional to 121,624.75, 167,749.79 and 104,657.43 is: 144,347.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,624.75 : 167,749.79 = 104,657.43 : x
  2. Step 2: Convert to fraction form
    121,624.75/167,749.79 = 104,657.43/x
  3. Step 3: Cross multiply
    121,624.75x = 167,749.79 × 104,657.43
  4. Step 4: Simplify right side
    121,624.75x = 17,556,261,144.56
  5. Step 5: Solve for x
    x = 17,556,261,144.56/121,624.75
  6. Step 6: Final answer
    x = 144,347.77

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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.