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Finding the Fourth Proportional to 111,808.80, 167,713.20 and 100,533.60

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Solution

The fourth proportional to 111,808.80, 167,713.20 and 100,533.60 is: 150,800.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,808.80 : 167,713.20 = 100,533.60 : x
  2. Step 2: Convert to fraction form
    111,808.80/167,713.20 = 100,533.60/x
  3. Step 3: Cross multiply
    111,808.80x = 167,713.20 × 100,533.60
  4. Step 4: Simplify right side
    111,808.80x = 16,860,811,763.52
  5. Step 5: Solve for x
    x = 16,860,811,763.52/111,808.80
  6. Step 6: Final answer
    x = 150,800.40

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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.