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Finding the Fourth Proportional to 139,004.64, 191,825.28 and 82,442.88

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Solution

The fourth proportional to 139,004.64, 191,825.28 and 82,442.88 is: 113,770.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,004.64 : 191,825.28 = 82,442.88 : x
  2. Step 2: Convert to fraction form
    139,004.64/191,825.28 = 82,442.88/x
  3. Step 3: Cross multiply
    139,004.64x = 191,825.28 × 82,442.88
  4. Step 4: Simplify right side
    139,004.64x = 15,814,628,540.01
  5. Step 5: Solve for x
    x = 15,814,628,540.01/139,004.64
  6. Step 6: Final answer
    x = 113,770.51

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1.5x scale

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.