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Finding the Fourth Proportional to 127,383.20, 191,113.20 and 68,247.20

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Solution

The fourth proportional to 127,383.20, 191,113.20 and 68,247.20 is: 102,391.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,383.20 : 191,113.20 = 68,247.20 : x
  2. Step 2: Convert to fraction form
    127,383.20/191,113.20 = 68,247.20/x
  3. Step 3: Cross multiply
    127,383.20x = 191,113.20 × 68,247.20
  4. Step 4: Simplify right side
    127,383.20x = 13,042,940,783.04
  5. Step 5: Solve for x
    x = 13,042,940,783.04/127,383.20
  6. Step 6: Final answer
    x = 102,391.37

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1.5x scale

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.