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Finding the Fourth Proportional to 127,276.80, 190,843.20 and 48,393.60

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Solution

The fourth proportional to 127,276.80, 190,843.20 and 48,393.60 is: 72,563.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,276.80 : 190,843.20 = 48,393.60 : x
  2. Step 2: Convert to fraction form
    127,276.80/190,843.20 = 48,393.60/x
  3. Step 3: Cross multiply
    127,276.80x = 190,843.20 × 48,393.60
  4. Step 4: Simplify right side
    127,276.80x = 9,235,589,483.52
  5. Step 5: Solve for x
    x = 9,235,589,483.52/127,276.80
  6. Step 6: Final answer
    x = 72,563.02

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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.