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Finding the Fourth Proportional to 12,801.12, 19,189.08 and 5,410.68

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Solution

The fourth proportional to 12,801.12, 19,189.08 and 5,410.68 is: 8,110.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,801.12 : 19,189.08 = 5,410.68 : x
  2. Step 2: Convert to fraction form
    12,801.12/19,189.08 = 5,410.68/x
  3. Step 3: Cross multiply
    12,801.12x = 19,189.08 × 5,410.68
  4. Step 4: Simplify right side
    12,801.12x = 103,825,971.37
  5. Step 5: Solve for x
    x = 103,825,971.37/12,801.12
  6. Step 6: Final answer
    x = 8,110.69

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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.