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Finding the Fourth Proportional to 121,698.36, 167,924.16 and 67,980.60

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Solution

The fourth proportional to 121,698.36, 167,924.16 and 67,980.60 is: 93,802.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,698.36 : 167,924.16 = 67,980.60 : x
  2. Step 2: Convert to fraction form
    121,698.36/167,924.16 = 67,980.60/x
  3. Step 3: Cross multiply
    121,698.36x = 167,924.16 × 67,980.60
  4. Step 4: Simplify right side
    121,698.36x = 11,415,585,151.30
  5. Step 5: Solve for x
    x = 11,415,585,151.30/121,698.36
  6. Step 6: Final answer
    x = 93,802.29

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1.5x scale

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.