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Finding the Fourth Proportional to 121,594.92, 167,668.74 and 79,074.60

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Solution

The fourth proportional to 121,594.92, 167,668.74 and 79,074.60 is: 109,036.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,594.92 : 167,668.74 = 79,074.60 : x
  2. Step 2: Convert to fraction form
    121,594.92/167,668.74 = 79,074.60/x
  3. Step 3: Cross multiply
    121,594.92x = 167,668.74 × 79,074.60
  4. Step 4: Simplify right side
    121,594.92x = 13,258,338,548.00
  5. Step 5: Solve for x
    x = 13,258,338,548.00/121,594.92
  6. Step 6: Final answer
    x = 109,036.94

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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.