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Finding the Fourth Proportional to 403,794.20, 605,642.70 and 167,112.20

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Solution

The fourth proportional to 403,794.20, 605,642.70 and 167,112.20 is: 250,648.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,794.20 : 605,642.70 = 167,112.20 : x
  2. Step 2: Convert to fraction form
    403,794.20/605,642.70 = 167,112.20/x
  3. Step 3: Cross multiply
    403,794.20x = 605,642.70 × 167,112.20
  4. Step 4: Simplify right side
    403,794.20x = 101,210,284,010.94
  5. Step 5: Solve for x
    x = 101,210,284,010.94/403,794.20
  6. Step 6: Final answer
    x = 250,648.19

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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.