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Finding the Fourth Proportional to 55,994.78, 84,029.08 and 20,934.44

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Solution

The fourth proportional to 55,994.78, 84,029.08 and 20,934.44 is: 31,415.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,994.78 : 84,029.08 = 20,934.44 : x
  2. Step 2: Convert to fraction form
    55,994.78/84,029.08 = 20,934.44/x
  3. Step 3: Cross multiply
    55,994.78x = 84,029.08 × 20,934.44
  4. Step 4: Simplify right side
    55,994.78x = 1,759,101,733.52
  5. Step 5: Solve for x
    x = 1,759,101,733.52/55,994.78
  6. Step 6: Final answer
    x = 31,415.46

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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.