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Finding the Fourth Proportional to 326,082.60, 489,123.90 and 213,816.60

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Solution

The fourth proportional to 326,082.60, 489,123.90 and 213,816.60 is: 320,724.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,082.60 : 489,123.90 = 213,816.60 : x
  2. Step 2: Convert to fraction form
    326,082.60/489,123.90 = 213,816.60/x
  3. Step 3: Cross multiply
    326,082.60x = 489,123.90 × 213,816.60
  4. Step 4: Simplify right side
    326,082.60x = 104,582,809,276.74
  5. Step 5: Solve for x
    x = 104,582,809,276.74/326,082.60
  6. Step 6: Final answer
    x = 320,724.90

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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.