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Finding the Fourth Proportional to 13,770.60, 20,655.94 and 5,452.58

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Solution

The fourth proportional to 13,770.60, 20,655.94 and 5,452.58 is: 8,178.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,770.60 : 20,655.94 = 5,452.58 : x
  2. Step 2: Convert to fraction form
    13,770.60/20,655.94 = 5,452.58/x
  3. Step 3: Cross multiply
    13,770.60x = 20,655.94 × 5,452.58
  4. Step 4: Simplify right side
    13,770.60x = 112,628,165.33
  5. Step 5: Solve for x
    x = 112,628,165.33/13,770.60
  6. Step 6: Final answer
    x = 8,178.89

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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.