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Finding the Fourth Proportional to 186,188.75, 256,932.91 and 105,614.55

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Solution

The fourth proportional to 186,188.75, 256,932.91 and 105,614.55 is: 145,743.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,188.75 : 256,932.91 = 105,614.55 : x
  2. Step 2: Convert to fraction form
    186,188.75/256,932.91 = 105,614.55/x
  3. Step 3: Cross multiply
    186,188.75x = 256,932.91 × 105,614.55
  4. Step 4: Simplify right side
    186,188.75x = 27,135,853,291.54
  5. Step 5: Solve for x
    x = 27,135,853,291.54/186,188.75
  6. Step 6: Final answer
    x = 145,743.78

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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.