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Finding the Fourth Proportional to 192,714.60, 289,028.70 and 126,618.60

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Solution

The fourth proportional to 192,714.60, 289,028.70 and 126,618.60 is: 189,899.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,714.60 : 289,028.70 = 126,618.60 : x
  2. Step 2: Convert to fraction form
    192,714.60/289,028.70 = 126,618.60/x
  3. Step 3: Cross multiply
    192,714.60x = 289,028.70 × 126,618.60
  4. Step 4: Simplify right side
    192,714.60x = 36,596,409,353.82
  5. Step 5: Solve for x
    x = 36,596,409,353.82/192,714.60
  6. Step 6: Final answer
    x = 189,899.52

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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.