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Finding the Fourth Proportional to 136,406.28, 188,250.13 and 82,693.56

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Solution

The fourth proportional to 136,406.28, 188,250.13 and 82,693.56 is: 114,122.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,406.28 : 188,250.13 = 82,693.56 : x
  2. Step 2: Convert to fraction form
    136,406.28/188,250.13 = 82,693.56/x
  3. Step 3: Cross multiply
    136,406.28x = 188,250.13 × 82,693.56
  4. Step 4: Simplify right side
    136,406.28x = 15,567,073,420.16
  5. Step 5: Solve for x
    x = 15,567,073,420.16/136,406.28
  6. Step 6: Final answer
    x = 114,122.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.