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Finding the Fourth Proportional to 127,229.40, 190,844.10 and 105,067.80

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Solution

The fourth proportional to 127,229.40, 190,844.10 and 105,067.80 is: 157,601.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,229.40 : 190,844.10 = 105,067.80 : x
  2. Step 2: Convert to fraction form
    127,229.40/190,844.10 = 105,067.80/x
  3. Step 3: Cross multiply
    127,229.40x = 190,844.10 × 105,067.80
  4. Step 4: Simplify right side
    127,229.40x = 20,051,569,729.98
  5. Step 5: Solve for x
    x = 20,051,569,729.98/127,229.40
  6. Step 6: Final answer
    x = 157,601.70

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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.