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Finding the Fourth Proportional to 127,326.92, 190,990.92 and 43,087.76

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Solution

The fourth proportional to 127,326.92, 190,990.92 and 43,087.76 is: 64,631.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,326.92 : 190,990.92 = 43,087.76 : x
  2. Step 2: Convert to fraction form
    127,326.92/190,990.92 = 43,087.76/x
  3. Step 3: Cross multiply
    127,326.92x = 190,990.92 × 43,087.76
  4. Step 4: Simplify right side
    127,326.92x = 8,229,370,923.14
  5. Step 5: Solve for x
    x = 8,229,370,923.14/127,326.92
  6. Step 6: Final answer
    x = 64,631.82

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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.