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Finding the Fourth Proportional to 276,896.97, 415,339.49 and 77,212.04

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Solution

The fourth proportional to 276,896.97, 415,339.49 and 77,212.04 is: 115,816.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,896.97 : 415,339.49 = 77,212.04 : x
  2. Step 2: Convert to fraction form
    276,896.97/415,339.49 = 77,212.04/x
  3. Step 3: Cross multiply
    276,896.97x = 415,339.49 × 77,212.04
  4. Step 4: Simplify right side
    276,896.97x = 32,069,207,431.79
  5. Step 5: Solve for x
    x = 32,069,207,431.79/276,896.97
  6. Step 6: Final answer
    x = 115,816.39

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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.