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Finding the Fourth Proportional to 127,157.64, 190,765.56 and 55,122.64

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Solution

The fourth proportional to 127,157.64, 190,765.56 and 55,122.64 is: 82,696.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,157.64 : 190,765.56 = 55,122.64 : x
  2. Step 2: Convert to fraction form
    127,157.64/190,765.56 = 55,122.64/x
  3. Step 3: Cross multiply
    127,157.64x = 190,765.56 × 55,122.64
  4. Step 4: Simplify right side
    127,157.64x = 10,515,501,288.28
  5. Step 5: Solve for x
    x = 10,515,501,288.28/127,157.64
  6. Step 6: Final answer
    x = 82,696.57

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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.