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Finding the Fourth Proportional to 136,893.20, 192,065.20 and 136,893.20

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Solution

The fourth proportional to 136,893.20, 192,065.20 and 136,893.20 is: 192,065.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,893.20 : 192,065.20 = 136,893.20 : x
  2. Step 2: Convert to fraction form
    136,893.20/192,065.20 = 136,893.20/x
  3. Step 3: Cross multiply
    136,893.20x = 192,065.20 × 136,893.20
  4. Step 4: Simplify right side
    136,893.20x = 26,292,419,836.64
  5. Step 5: Solve for x
    x = 26,292,419,836.64/136,893.20
  6. Step 6: Final answer
    x = 192,065.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.