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Finding the Fourth Proportional to 13,167.84, 18,171.50 and 7,199.45

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Solution

The fourth proportional to 13,167.84, 18,171.50 and 7,199.45 is: 9,935.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,167.84 : 18,171.50 = 7,199.45 : x
  2. Step 2: Convert to fraction form
    13,167.84/18,171.50 = 7,199.45/x
  3. Step 3: Cross multiply
    13,167.84x = 18,171.50 × 7,199.45
  4. Step 4: Simplify right side
    13,167.84x = 130,824,678.82
  5. Step 5: Solve for x
    x = 130,824,678.82/13,167.84
  6. Step 6: Final answer
    x = 9,935.17

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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.