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Finding the Fourth Proportional to 186,651.10, 279,991.32 and 91,932.22

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Solution

The fourth proportional to 186,651.10, 279,991.32 and 91,932.22 is: 137,905.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,651.10 : 279,991.32 = 91,932.22 : x
  2. Step 2: Convert to fraction form
    186,651.10/279,991.32 = 91,932.22/x
  3. Step 3: Cross multiply
    186,651.10x = 279,991.32 × 91,932.22
  4. Step 4: Simplify right side
    186,651.10x = 25,740,223,628.33
  5. Step 5: Solve for x
    x = 25,740,223,628.33/186,651.10
  6. Step 6: Final answer
    x = 137,905.56

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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.