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Finding the Fourth Proportional to 606,775.12, 836,996.09 and 388,906.18

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Solution

The fourth proportional to 606,775.12, 836,996.09 and 388,906.18 is: 536,463.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,775.12 : 836,996.09 = 388,906.18 : x
  2. Step 2: Convert to fraction form
    606,775.12/836,996.09 = 388,906.18/x
  3. Step 3: Cross multiply
    606,775.12x = 836,996.09 × 388,906.18
  4. Step 4: Simplify right side
    606,775.12x = 325,512,947,999.82
  5. Step 5: Solve for x
    x = 325,512,947,999.82/606,775.12
  6. Step 6: Final answer
    x = 536,463.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.