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Finding the Fourth Proportional to 352,066.49, 485,851.87 and 190,921.49

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Solution

The fourth proportional to 352,066.49, 485,851.87 and 190,921.49 is: 263,471.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,066.49 : 485,851.87 = 190,921.49 : x
  2. Step 2: Convert to fraction form
    352,066.49/485,851.87 = 190,921.49/x
  3. Step 3: Cross multiply
    352,066.49x = 485,851.87 × 190,921.49
  4. Step 4: Simplify right side
    352,066.49x = 92,759,562,939.69
  5. Step 5: Solve for x
    x = 92,759,562,939.69/352,066.49
  6. Step 6: Final answer
    x = 263,471.72

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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.