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Finding the Fourth Proportional to 8,673.60, 13,005.60 and 3,742.40

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Solution

The fourth proportional to 8,673.60, 13,005.60 and 3,742.40 is: 5,611.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.60 : 13,005.60 = 3,742.40 : x
  2. Step 2: Convert to fraction form
    8,673.60/13,005.60 = 3,742.40/x
  3. Step 3: Cross multiply
    8,673.60x = 13,005.60 × 3,742.40
  4. Step 4: Simplify right side
    8,673.60x = 48,672,157.44
  5. Step 5: Solve for x
    x = 48,672,157.44/8,673.60
  6. Step 6: Final answer
    x = 5,611.53

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