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Finding the Fourth Proportional to 9,398.15, 12,969.44 and 5,207.21

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Solution

The fourth proportional to 9,398.15, 12,969.44 and 5,207.21 is: 7,185.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,398.15 : 12,969.44 = 5,207.21 : x
  2. Step 2: Convert to fraction form
    9,398.15/12,969.44 = 5,207.21/x
  3. Step 3: Cross multiply
    9,398.15x = 12,969.44 × 5,207.21
  4. Step 4: Simplify right side
    9,398.15x = 67,534,506.78
  5. Step 5: Solve for x
    x = 67,534,506.78/9,398.15
  6. Step 6: Final answer
    x = 7,185.94

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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.