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Finding the Fourth Proportional to 18,808.11, 25,956 and 10,850.31

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Solution

The fourth proportional to 18,808.11, 25,956 and 10,850.31 is: 14,973.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.11 : 25,956 = 10,850.31 : x
  2. Step 2: Convert to fraction form
    18,808.11/25,956 = 10,850.31/x
  3. Step 3: Cross multiply
    18,808.11x = 25,956 × 10,850.31
  4. Step 4: Simplify right side
    18,808.11x = 281,630,646.36
  5. Step 5: Solve for x
    x = 281,630,646.36/18,808.11
  6. Step 6: Final answer
    x = 14,973.89

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Why These Related Problems?

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