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Finding the Fourth Proportional to 186,198.93, 279,079.59 and 86,147.73

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Solution

The fourth proportional to 186,198.93, 279,079.59 and 86,147.73 is: 129,120.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,198.93 : 279,079.59 = 86,147.73 : x
  2. Step 2: Convert to fraction form
    186,198.93/279,079.59 = 86,147.73/x
  3. Step 3: Cross multiply
    186,198.93x = 279,079.59 × 86,147.73
  4. Step 4: Simplify right side
    186,198.93x = 24,042,073,167.83
  5. Step 5: Solve for x
    x = 24,042,073,167.83/186,198.93
  6. Step 6: Final answer
    x = 129,120.36

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1.5x scale

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.