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Finding the Fourth Proportional to 193,587.25, 290,391.81 and 68,928.25

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Solution

The fourth proportional to 193,587.25, 290,391.81 and 68,928.25 is: 103,396.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,587.25 : 290,391.81 = 68,928.25 : x
  2. Step 2: Convert to fraction form
    193,587.25/290,391.81 = 68,928.25/x
  3. Step 3: Cross multiply
    193,587.25x = 290,391.81 × 68,928.25
  4. Step 4: Simplify right side
    193,587.25x = 20,016,199,277.63
  5. Step 5: Solve for x
    x = 20,016,199,277.63/193,587.25
  6. Step 6: Final answer
    x = 103,396.27

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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.