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Finding the Fourth Proportional to 7,261.60, 10,885.20 and 3,359.20

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Solution

The fourth proportional to 7,261.60, 10,885.20 and 3,359.20 is: 5,035.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,261.60 : 10,885.20 = 3,359.20 : x
  2. Step 2: Convert to fraction form
    7,261.60/10,885.20 = 3,359.20/x
  3. Step 3: Cross multiply
    7,261.60x = 10,885.20 × 3,359.20
  4. Step 4: Simplify right side
    7,261.60x = 36,565,563.84
  5. Step 5: Solve for x
    x = 36,565,563.84/7,261.60
  6. Step 6: Final answer
    x = 5,035.47

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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.