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Finding the Fourth Proportional to 111,457, 167,195.22 and 28,351

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Solution

The fourth proportional to 111,457, 167,195.22 and 28,351 is: 42,528.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,457 : 167,195.22 = 28,351 : x
  2. Step 2: Convert to fraction form
    111,457/167,195.22 = 28,351/x
  3. Step 3: Cross multiply
    111,457x = 167,195.22 × 28,351
  4. Step 4: Simplify right side
    111,457x = 4,740,151,682.22
  5. Step 5: Solve for x
    x = 4,740,151,682.22/111,457
  6. Step 6: Final answer
    x = 42,528.97

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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.