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Finding the Fourth Proportional to 416,015.82, 624,117.69 and 131,723.64

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Solution

The fourth proportional to 416,015.82, 624,117.69 and 131,723.64 is: 197,615.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,015.82 : 624,117.69 = 131,723.64 : x
  2. Step 2: Convert to fraction form
    416,015.82/624,117.69 = 131,723.64/x
  3. Step 3: Cross multiply
    416,015.82x = 624,117.69 × 131,723.64
  4. Step 4: Simplify right side
    416,015.82x = 82,211,053,915.19
  5. Step 5: Solve for x
    x = 82,211,053,915.19/416,015.82
  6. Step 6: Final answer
    x = 197,615.21

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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.