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Finding the Fourth Proportional to 111,428.46, 167,144.31 and 36,554.49

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Solution

The fourth proportional to 111,428.46, 167,144.31 and 36,554.49 is: 54,832.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,428.46 : 167,144.31 = 36,554.49 : x
  2. Step 2: Convert to fraction form
    111,428.46/167,144.31 = 36,554.49/x
  3. Step 3: Cross multiply
    111,428.46x = 167,144.31 × 36,554.49
  4. Step 4: Simplify right side
    111,428.46x = 6,109,875,008.45
  5. Step 5: Solve for x
    x = 6,109,875,008.45/111,428.46
  6. Step 6: Final answer
    x = 54,832.27

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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.