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Finding the Fourth Proportional to 548,707.80, 768,715.80 and 548,707.80

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Solution

The fourth proportional to 548,707.80, 768,715.80 and 548,707.80 is: 768,715.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,707.80 : 768,715.80 = 548,707.80 : x
  2. Step 2: Convert to fraction form
    548,707.80/768,715.80 = 548,707.80/x
  3. Step 3: Cross multiply
    548,707.80x = 768,715.80 × 548,707.80
  4. Step 4: Simplify right side
    548,707.80x = 421,800,355,443.24
  5. Step 5: Solve for x
    x = 421,800,355,443.24/548,707.80
  6. Step 6: Final answer
    x = 768,715.80

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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.