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Finding the Fourth Proportional to 127,940.62, 191,953.40 and 39,195

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Solution

The fourth proportional to 127,940.62, 191,953.40 and 39,195 is: 58,805.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,940.62 : 191,953.40 = 39,195 : x
  2. Step 2: Convert to fraction form
    127,940.62/191,953.40 = 39,195/x
  3. Step 3: Cross multiply
    127,940.62x = 191,953.40 × 39,195
  4. Step 4: Simplify right side
    127,940.62x = 7,523,613,513
  5. Step 5: Solve for x
    x = 7,523,613,513/127,940.62
  6. Step 6: Final answer
    x = 58,805.51

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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.