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Finding the Fourth Proportional to 111,602.36, 167,428.20 and 36,719.48

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Solution

The fourth proportional to 111,602.36, 167,428.20 and 36,719.48 is: 55,087.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,602.36 : 167,428.20 = 36,719.48 : x
  2. Step 2: Convert to fraction form
    111,602.36/167,428.20 = 36,719.48/x
  3. Step 3: Cross multiply
    111,602.36x = 167,428.20 × 36,719.48
  4. Step 4: Simplify right side
    111,602.36x = 6,147,876,441.34
  5. Step 5: Solve for x
    x = 6,147,876,441.34/111,602.36
  6. Step 6: Final answer
    x = 55,087.33

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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.