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Finding the Fourth Proportional to 82,811.43, 114,352.83 and 61,553.79

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Solution

The fourth proportional to 82,811.43, 114,352.83 and 61,553.79 is: 84,998.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,811.43 : 114,352.83 = 61,553.79 : x
  2. Step 2: Convert to fraction form
    82,811.43/114,352.83 = 61,553.79/x
  3. Step 3: Cross multiply
    82,811.43x = 114,352.83 × 61,553.79
  4. Step 4: Simplify right side
    82,811.43x = 7,038,850,083.73
  5. Step 5: Solve for x
    x = 7,038,850,083.73/82,811.43
  6. Step 6: Final answer
    x = 84,998.53

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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.