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Finding the Fourth Proportional to 19,590.96, 29,390.14 and 6,447.12

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Solution

The fourth proportional to 19,590.96, 29,390.14 and 6,447.12 is: 9,671.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,590.96 : 29,390.14 = 6,447.12 : x
  2. Step 2: Convert to fraction form
    19,590.96/29,390.14 = 6,447.12/x
  3. Step 3: Cross multiply
    19,590.96x = 29,390.14 × 6,447.12
  4. Step 4: Simplify right side
    19,590.96x = 189,481,759.40
  5. Step 5: Solve for x
    x = 189,481,759.40/19,590.96
  6. Step 6: Final answer
    x = 9,671.90

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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.