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Finding the Fourth Proportional to 111,729.20, 167,593.80 and 105,897.20

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Solution

The fourth proportional to 111,729.20, 167,593.80 and 105,897.20 is: 158,845.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,729.20 : 167,593.80 = 105,897.20 : x
  2. Step 2: Convert to fraction form
    111,729.20/167,593.80 = 105,897.20/x
  3. Step 3: Cross multiply
    111,729.20x = 167,593.80 × 105,897.20
  4. Step 4: Simplify right side
    111,729.20x = 17,747,714,157.36
  5. Step 5: Solve for x
    x = 17,747,714,157.36/111,729.20
  6. Step 6: Final answer
    x = 158,845.80

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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.