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Finding the Fourth Proportional to 189,679.88, 284,536.22 and 49,438.50

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Solution

The fourth proportional to 189,679.88, 284,536.22 and 49,438.50 is: 74,162.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,679.88 : 284,536.22 = 49,438.50 : x
  2. Step 2: Convert to fraction form
    189,679.88/284,536.22 = 49,438.50/x
  3. Step 3: Cross multiply
    189,679.88x = 284,536.22 × 49,438.50
  4. Step 4: Simplify right side
    189,679.88x = 14,067,043,665.28
  5. Step 5: Solve for x
    x = 14,067,043,665.28/189,679.88
  6. Step 6: Final answer
    x = 74,162.03

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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.