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Finding the Fourth Proportional to 45,940.64, 68,852.16 and 39,993.20

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Solution

The fourth proportional to 45,940.64, 68,852.16 and 39,993.20 is: 59,938.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,940.64 : 68,852.16 = 39,993.20 : x
  2. Step 2: Convert to fraction form
    45,940.64/68,852.16 = 39,993.20/x
  3. Step 3: Cross multiply
    45,940.64x = 68,852.16 × 39,993.20
  4. Step 4: Simplify right side
    45,940.64x = 2,753,618,205.31
  5. Step 5: Solve for x
    x = 2,753,618,205.31/45,940.64
  6. Step 6: Final answer
    x = 59,938.61

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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.