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Finding the Fourth Proportional to 326,319.60, 489,220.20 and 178,575.60

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Solution

The fourth proportional to 326,319.60, 489,220.20 and 178,575.60 is: 267,721.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,319.60 : 489,220.20 = 178,575.60 : x
  2. Step 2: Convert to fraction form
    326,319.60/489,220.20 = 178,575.60/x
  3. Step 3: Cross multiply
    326,319.60x = 489,220.20 × 178,575.60
  4. Step 4: Simplify right side
    326,319.60x = 87,362,790,747.12
  5. Step 5: Solve for x
    x = 87,362,790,747.12/326,319.60
  6. Step 6: Final answer
    x = 267,721.56

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.