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Finding the Fourth Proportional to 111,568, 167,361.60 and 28,461.76

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Solution

The fourth proportional to 111,568, 167,361.60 and 28,461.76 is: 42,695.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,568 : 167,361.60 = 28,461.76 : x
  2. Step 2: Convert to fraction form
    111,568/167,361.60 = 28,461.76/x
  3. Step 3: Cross multiply
    111,568x = 167,361.60 × 28,461.76
  4. Step 4: Simplify right side
    111,568x = 4,763,405,692.42
  5. Step 5: Solve for x
    x = 4,763,405,692.42/111,568
  6. Step 6: Final answer
    x = 42,695.09

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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.