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Finding the Fourth Proportional to 127,736.80, 178,481.60 and 127,736.80

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Solution

The fourth proportional to 127,736.80, 178,481.60 and 127,736.80 is: 178,481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,736.80 : 178,481.60 = 127,736.80 : x
  2. Step 2: Convert to fraction form
    127,736.80/178,481.60 = 127,736.80/x
  3. Step 3: Cross multiply
    127,736.80x = 178,481.60 × 127,736.80
  4. Step 4: Simplify right side
    127,736.80x = 22,798,668,442.88
  5. Step 5: Solve for x
    x = 22,798,668,442.88/127,736.80
  6. Step 6: Final answer
    x = 178,481.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.