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Finding the Fourth Proportional to 13,460.55, 18,565.11 and 11,949.71

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Solution

The fourth proportional to 13,460.55, 18,565.11 and 11,949.71 is: 16,481.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,460.55 : 18,565.11 = 11,949.71 : x
  2. Step 2: Convert to fraction form
    13,460.55/18,565.11 = 11,949.71/x
  3. Step 3: Cross multiply
    13,460.55x = 18,565.11 × 11,949.71
  4. Step 4: Simplify right side
    13,460.55x = 221,847,587.79
  5. Step 5: Solve for x
    x = 221,847,587.79/13,460.55
  6. Step 6: Final answer
    x = 16,481.32

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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.