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Finding the Fourth Proportional to 186,693.93, 279,928.31 and 74,391.48

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Solution

The fourth proportional to 186,693.93, 279,928.31 and 74,391.48 is: 111,542.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,693.93 : 279,928.31 = 74,391.48 : x
  2. Step 2: Convert to fraction form
    186,693.93/279,928.31 = 74,391.48/x
  3. Step 3: Cross multiply
    186,693.93x = 279,928.31 × 74,391.48
  4. Step 4: Simplify right side
    186,693.93x = 20,824,280,902.84
  5. Step 5: Solve for x
    x = 20,824,280,902.84/186,693.93
  6. Step 6: Final answer
    x = 111,542.36

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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.