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Finding the Fourth Proportional to 512,553.90, 768,830.85 and 273,405.45

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Solution

The fourth proportional to 512,553.90, 768,830.85 and 273,405.45 is: 410,108.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,553.90 : 768,830.85 = 273,405.45 : x
  2. Step 2: Convert to fraction form
    512,553.90/768,830.85 = 273,405.45/x
  3. Step 3: Cross multiply
    512,553.90x = 768,830.85 × 273,405.45
  4. Step 4: Simplify right side
    512,553.90x = 210,202,544,518.13
  5. Step 5: Solve for x
    x = 210,202,544,518.13/512,553.90
  6. Step 6: Final answer
    x = 410,108.18

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1.5x scale

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.