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Finding the Fourth Proportional to 186,496, 279,540.48 and 91,791.36

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Solution

The fourth proportional to 186,496, 279,540.48 and 91,791.36 is: 137,586.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,496 : 279,540.48 = 91,791.36 : x
  2. Step 2: Convert to fraction form
    186,496/279,540.48 = 91,791.36/x
  3. Step 3: Cross multiply
    186,496x = 279,540.48 × 91,791.36
  4. Step 4: Simplify right side
    186,496x = 25,659,400,834.25
  5. Step 5: Solve for x
    x = 25,659,400,834.25/186,496
  6. Step 6: Final answer
    x = 137,586.87

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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.