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Finding the Fourth Proportional to 84,932.80, 117,208.80 and 49,124.80

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Solution

The fourth proportional to 84,932.80, 117,208.80 and 49,124.80 is: 67,793.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,932.80 : 117,208.80 = 49,124.80 : x
  2. Step 2: Convert to fraction form
    84,932.80/117,208.80 = 49,124.80/x
  3. Step 3: Cross multiply
    84,932.80x = 117,208.80 × 49,124.80
  4. Step 4: Simplify right side
    84,932.80x = 5,757,858,858.24
  5. Step 5: Solve for x
    x = 5,757,858,858.24/84,932.80
  6. Step 6: Final answer
    x = 67,793.11

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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.