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Finding the Fourth Proportional to 227,220.60, 340,830.90 and 127,687.80

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Solution

The fourth proportional to 227,220.60, 340,830.90 and 127,687.80 is: 191,531.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,220.60 : 340,830.90 = 127,687.80 : x
  2. Step 2: Convert to fraction form
    227,220.60/340,830.90 = 127,687.80/x
  3. Step 3: Cross multiply
    227,220.60x = 340,830.90 × 127,687.80
  4. Step 4: Simplify right side
    227,220.60x = 43,519,947,793.02
  5. Step 5: Solve for x
    x = 43,519,947,793.02/227,220.60
  6. Step 6: Final answer
    x = 191,531.70

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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.