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Finding the Fourth Proportional to 126,992.56, 190,499.19 and 63,780.16

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Solution

The fourth proportional to 126,992.56, 190,499.19 and 63,780.16 is: 95,675.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,992.56 : 190,499.19 = 63,780.16 : x
  2. Step 2: Convert to fraction form
    126,992.56/190,499.19 = 63,780.16/x
  3. Step 3: Cross multiply
    126,992.56x = 190,499.19 × 63,780.16
  4. Step 4: Simplify right side
    126,992.56x = 12,150,068,818.60
  5. Step 5: Solve for x
    x = 12,150,068,818.60/126,992.56
  6. Step 6: Final answer
    x = 95,675.44

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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.