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Finding the Fourth Proportional to 326,361.76, 489,546.96 and 126,693.52

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Solution

The fourth proportional to 326,361.76, 489,546.96 and 126,693.52 is: 190,041.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,361.76 : 489,546.96 = 126,693.52 : x
  2. Step 2: Convert to fraction form
    326,361.76/489,546.96 = 126,693.52/x
  3. Step 3: Cross multiply
    326,361.76x = 489,546.96 × 126,693.52
  4. Step 4: Simplify right side
    326,361.76x = 62,022,427,567.70
  5. Step 5: Solve for x
    x = 62,022,427,567.70/326,361.76
  6. Step 6: Final answer
    x = 190,041.96

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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.