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Finding the Fourth Proportional to 548,633.80, 768,612.20 and 548,633.80

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Solution

The fourth proportional to 548,633.80, 768,612.20 and 548,633.80 is: 768,612.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,633.80 : 768,612.20 = 548,633.80 : x
  2. Step 2: Convert to fraction form
    548,633.80/768,612.20 = 548,633.80/x
  3. Step 3: Cross multiply
    548,633.80x = 768,612.20 × 548,633.80
  4. Step 4: Simplify right side
    548,633.80x = 421,686,632,012.36
  5. Step 5: Solve for x
    x = 421,686,632,012.36/548,633.80
  6. Step 6: Final answer
    x = 768,612.20

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1.5x scale

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.