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Finding the Fourth Proportional to 111,985.60, 167,974.80 and 37,109.20

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Solution

The fourth proportional to 111,985.60, 167,974.80 and 37,109.20 is: 55,662.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,985.60 : 167,974.80 = 37,109.20 : x
  2. Step 2: Convert to fraction form
    111,985.60/167,974.80 = 37,109.20/x
  3. Step 3: Cross multiply
    111,985.60x = 167,974.80 × 37,109.20
  4. Step 4: Simplify right side
    111,985.60x = 6,233,410,448.16
  5. Step 5: Solve for x
    x = 6,233,410,448.16/111,985.60
  6. Step 6: Final answer
    x = 55,662.61

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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.