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Finding the Fourth Proportional to 548,679.30, 768,675.90 and 548,679.30

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Solution

The fourth proportional to 548,679.30, 768,675.90 and 548,679.30 is: 768,675.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,679.30 : 768,675.90 = 548,679.30 : x
  2. Step 2: Convert to fraction form
    548,679.30/768,675.90 = 548,679.30/x
  3. Step 3: Cross multiply
    548,679.30x = 768,675.90 × 548,679.30
  4. Step 4: Simplify right side
    548,679.30x = 421,756,554,738.87
  5. Step 5: Solve for x
    x = 421,756,554,738.87/548,679.30
  6. Step 6: Final answer
    x = 768,675.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.