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Finding the Fourth Proportional to 351,806.54, 485,494.74 and 190,661.58

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Solution

The fourth proportional to 351,806.54, 485,494.74 and 190,661.58 is: 263,113.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,806.54 : 485,494.74 = 190,661.58 : x
  2. Step 2: Convert to fraction form
    351,806.54/485,494.74 = 190,661.58/x
  3. Step 3: Cross multiply
    351,806.54x = 485,494.74 × 190,661.58
  4. Step 4: Simplify right side
    351,806.54x = 92,565,191,782.62
  5. Step 5: Solve for x
    x = 92,565,191,782.62/351,806.54
  6. Step 6: Final answer
    x = 263,113.91

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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.