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Finding the Fourth Proportional to 76,765.72, 105,936.51 and 44,940.64

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Solution

The fourth proportional to 76,765.72, 105,936.51 and 44,940.64 is: 62,017.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,765.72 : 105,936.51 = 44,940.64 : x
  2. Step 2: Convert to fraction form
    76,765.72/105,936.51 = 44,940.64/x
  3. Step 3: Cross multiply
    76,765.72x = 105,936.51 × 44,940.64
  4. Step 4: Simplify right side
    76,765.72x = 4,760,854,558.77
  5. Step 5: Solve for x
    x = 4,760,854,558.77/76,765.72
  6. Step 6: Final answer
    x = 62,017.98

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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.