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Finding the Fourth Proportional to 403,479.80, 605,219.70 and 166,743.80

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Solution

The fourth proportional to 403,479.80, 605,219.70 and 166,743.80 is: 250,115.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,479.80 : 605,219.70 = 166,743.80 : x
  2. Step 2: Convert to fraction form
    403,479.80/605,219.70 = 166,743.80/x
  3. Step 3: Cross multiply
    403,479.80x = 605,219.70 × 166,743.80
  4. Step 4: Simplify right side
    403,479.80x = 100,916,632,612.86
  5. Step 5: Solve for x
    x = 100,916,632,612.86/403,479.80
  6. Step 6: Final answer
    x = 250,115.70

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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.