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Finding the Fourth Proportional to 126,617.58, 190,874.88 and 118,055.88

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Solution

The fourth proportional to 126,617.58, 190,874.88 and 118,055.88 is: 177,968.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,617.58 : 190,874.88 = 118,055.88 : x
  2. Step 2: Convert to fraction form
    126,617.58/190,874.88 = 118,055.88/x
  3. Step 3: Cross multiply
    126,617.58x = 190,874.88 × 118,055.88
  4. Step 4: Simplify right side
    126,617.58x = 22,533,901,928.29
  5. Step 5: Solve for x
    x = 22,533,901,928.29/126,617.58
  6. Step 6: Final answer
    x = 177,968.19

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.