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Finding the Fourth Proportional to 127,116.60, 190,893.60 and 82,939.20

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Solution

The fourth proportional to 127,116.60, 190,893.60 and 82,939.20 is: 124,551.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,116.60 : 190,893.60 = 82,939.20 : x
  2. Step 2: Convert to fraction form
    127,116.60/190,893.60 = 82,939.20/x
  3. Step 3: Cross multiply
    127,116.60x = 190,893.60 × 82,939.20
  4. Step 4: Simplify right side
    127,116.60x = 15,832,562,469.12
  5. Step 5: Solve for x
    x = 15,832,562,469.12/127,116.60
  6. Step 6: Final answer
    x = 124,551.49

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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.