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Finding the Fourth Proportional to 186,604.40, 279,906.60 and 111,954.80

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Solution

The fourth proportional to 186,604.40, 279,906.60 and 111,954.80 is: 167,932.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,604.40 : 279,906.60 = 111,954.80 : x
  2. Step 2: Convert to fraction form
    186,604.40/279,906.60 = 111,954.80/x
  3. Step 3: Cross multiply
    186,604.40x = 279,906.60 × 111,954.80
  4. Step 4: Simplify right side
    186,604.40x = 31,336,887,421.68
  5. Step 5: Solve for x
    x = 31,336,887,421.68/186,604.40
  6. Step 6: Final answer
    x = 167,932.20

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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.