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Finding the Fourth Proportional to 127,049.92, 190,535.84 and 87,858.88

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Solution

The fourth proportional to 127,049.92, 190,535.84 and 87,858.88 is: 131,761.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,049.92 : 190,535.84 = 87,858.88 : x
  2. Step 2: Convert to fraction form
    127,049.92/190,535.84 = 87,858.88/x
  3. Step 3: Cross multiply
    127,049.92x = 190,535.84 × 87,858.88
  4. Step 4: Simplify right side
    127,049.92x = 16,740,265,502.26
  5. Step 5: Solve for x
    x = 16,740,265,502.26/127,049.92
  6. Step 6: Final answer
    x = 131,761.32

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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.