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Finding the Fourth Proportional to 82,942.73, 124,450.85 and 43,490.47

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Solution

The fourth proportional to 82,942.73, 124,450.85 and 43,490.47 is: 65,254.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,942.73 : 124,450.85 = 43,490.47 : x
  2. Step 2: Convert to fraction form
    82,942.73/124,450.85 = 43,490.47/x
  3. Step 3: Cross multiply
    82,942.73x = 124,450.85 × 43,490.47
  4. Step 4: Simplify right side
    82,942.73x = 5,412,425,958.40
  5. Step 5: Solve for x
    x = 5,412,425,958.40/82,942.73
  6. Step 6: Final answer
    x = 65,254.98

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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.