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Finding the Fourth Proportional to 13,167.95, 18,171.82 and 7,199.61

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Solution

The fourth proportional to 13,167.95, 18,171.82 and 7,199.61 is: 9,935.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,167.95 : 18,171.82 = 7,199.61 : x
  2. Step 2: Convert to fraction form
    13,167.95/18,171.82 = 7,199.61/x
  3. Step 3: Cross multiply
    13,167.95x = 18,171.82 × 7,199.61
  4. Step 4: Simplify right side
    13,167.95x = 130,830,016.99
  5. Step 5: Solve for x
    x = 130,830,016.99/13,167.95
  6. Step 6: Final answer
    x = 9,935.49

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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.