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Finding the Fourth Proportional to 192,018.78, 265,033.35 and 116,630.46

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Solution

The fourth proportional to 192,018.78, 265,033.35 and 116,630.46 is: 160,978.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,018.78 : 265,033.35 = 116,630.46 : x
  2. Step 2: Convert to fraction form
    192,018.78/265,033.35 = 116,630.46/x
  3. Step 3: Cross multiply
    192,018.78x = 265,033.35 × 116,630.46
  4. Step 4: Simplify right side
    192,018.78x = 30,910,961,525.84
  5. Step 5: Solve for x
    x = 30,910,961,525.84/192,018.78
  6. Step 6: Final answer
    x = 160,978.85

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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.