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Finding the Fourth Proportional to 188,912.25, 260,675.15 and 127,791.81

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Solution

The fourth proportional to 188,912.25, 260,675.15 and 127,791.81 is: 176,336.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,912.25 : 260,675.15 = 127,791.81 : x
  2. Step 2: Convert to fraction form
    188,912.25/260,675.15 = 127,791.81/x
  3. Step 3: Cross multiply
    188,912.25x = 260,675.15 × 127,791.81
  4. Step 4: Simplify right side
    188,912.25x = 33,312,148,601.56
  5. Step 5: Solve for x
    x = 33,312,148,601.56/188,912.25
  6. Step 6: Final answer
    x = 176,336.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.