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Finding the Fourth Proportional to 111,185.44, 166,778.64 and 28,079.44

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Solution

The fourth proportional to 111,185.44, 166,778.64 and 28,079.44 is: 42,119.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,185.44 : 166,778.64 = 28,079.44 : x
  2. Step 2: Convert to fraction form
    111,185.44/166,778.64 = 28,079.44/x
  3. Step 3: Cross multiply
    111,185.44x = 166,778.64 × 28,079.44
  4. Step 4: Simplify right side
    111,185.44x = 4,683,050,815.16
  5. Step 5: Solve for x
    x = 4,683,050,815.16/111,185.44
  6. Step 6: Final answer
    x = 42,119.28

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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.