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Finding the Fourth Proportional to 111,991.50, 167,985.16 and 27,751.86

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Solution

The fourth proportional to 111,991.50, 167,985.16 and 27,751.86 is: 41,627.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,991.50 : 167,985.16 = 27,751.86 : x
  2. Step 2: Convert to fraction form
    111,991.50/167,985.16 = 27,751.86/x
  3. Step 3: Cross multiply
    111,991.50x = 167,985.16 × 27,751.86
  4. Step 4: Simplify right side
    111,991.50x = 4,661,900,642.40
  5. Step 5: Solve for x
    x = 4,661,900,642.40/111,991.50
  6. Step 6: Final answer
    x = 41,627.27

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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.