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Finding the Fourth Proportional to 139,592.16, 192,638.52 and 75,930.48

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Solution

The fourth proportional to 139,592.16, 192,638.52 and 75,930.48 is: 104,784.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,592.16 : 192,638.52 = 75,930.48 : x
  2. Step 2: Convert to fraction form
    139,592.16/192,638.52 = 75,930.48/x
  3. Step 3: Cross multiply
    139,592.16x = 192,638.52 × 75,930.48
  4. Step 4: Simplify right side
    139,592.16x = 14,627,135,290.09
  5. Step 5: Solve for x
    x = 14,627,135,290.09/139,592.16
  6. Step 6: Final answer
    x = 104,784.79

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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.