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Finding the Fourth Proportional to 23,688.73, 32,690.05 and 13,078.09

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Solution

The fourth proportional to 23,688.73, 32,690.05 and 13,078.09 is: 18,047.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,688.73 : 32,690.05 = 13,078.09 : x
  2. Step 2: Convert to fraction form
    23,688.73/32,690.05 = 13,078.09/x
  3. Step 3: Cross multiply
    23,688.73x = 32,690.05 × 13,078.09
  4. Step 4: Simplify right side
    23,688.73x = 427,523,416.00
  5. Step 5: Solve for x
    x = 427,523,416.00/23,688.73
  6. Step 6: Final answer
    x = 18,047.54

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.