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Finding the Fourth Proportional to 110,700.80, 166,072.80 and 47,520.80

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Solution

The fourth proportional to 110,700.80, 166,072.80 and 47,520.80 is: 71,290.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,700.80 : 166,072.80 = 47,520.80 : x
  2. Step 2: Convert to fraction form
    110,700.80/166,072.80 = 47,520.80/x
  3. Step 3: Cross multiply
    110,700.80x = 166,072.80 × 47,520.80
  4. Step 4: Simplify right side
    110,700.80x = 7,891,912,314.24
  5. Step 5: Solve for x
    x = 7,891,912,314.24/110,700.80
  6. Step 6: Final answer
    x = 71,290.47

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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.