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Finding the Fourth Proportional to 53,675.20, 80,512.80 and 34,040.80

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Solution

The fourth proportional to 53,675.20, 80,512.80 and 34,040.80 is: 51,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,675.20 : 80,512.80 = 34,040.80 : x
  2. Step 2: Convert to fraction form
    53,675.20/80,512.80 = 34,040.80/x
  3. Step 3: Cross multiply
    53,675.20x = 80,512.80 × 34,040.80
  4. Step 4: Simplify right side
    53,675.20x = 2,740,720,122.24
  5. Step 5: Solve for x
    x = 2,740,720,122.24/53,675.20
  6. Step 6: Final answer
    x = 51,061.20

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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.