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Finding the Fourth Proportional to 127,243.60, 190,865.40 and 117,620.80

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Solution

The fourth proportional to 127,243.60, 190,865.40 and 117,620.80 is: 176,431.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,243.60 : 190,865.40 = 117,620.80 : x
  2. Step 2: Convert to fraction form
    127,243.60/190,865.40 = 117,620.80/x
  3. Step 3: Cross multiply
    127,243.60x = 190,865.40 × 117,620.80
  4. Step 4: Simplify right side
    127,243.60x = 22,449,741,040.32
  5. Step 5: Solve for x
    x = 22,449,741,040.32/127,243.60
  6. Step 6: Final answer
    x = 176,431.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.