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Finding the Fourth Proportional to 111,021.30, 166,203.90 and 97,899.30

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Solution

The fourth proportional to 111,021.30, 166,203.90 and 97,899.30 is: 146,559.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,021.30 : 166,203.90 = 97,899.30 : x
  2. Step 2: Convert to fraction form
    111,021.30/166,203.90 = 97,899.30/x
  3. Step 3: Cross multiply
    111,021.30x = 166,203.90 × 97,899.30
  4. Step 4: Simplify right side
    111,021.30x = 16,271,245,467.27
  5. Step 5: Solve for x
    x = 16,271,245,467.27/111,021.30
  6. Step 6: Final answer
    x = 146,559.67

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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.