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Finding the Fourth Proportional to 16,770.66, 23,139.45 and 9,318.66

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Solution

The fourth proportional to 16,770.66, 23,139.45 and 9,318.66 is: 12,857.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,770.66 : 23,139.45 = 9,318.66 : x
  2. Step 2: Convert to fraction form
    16,770.66/23,139.45 = 9,318.66/x
  3. Step 3: Cross multiply
    16,770.66x = 23,139.45 × 9,318.66
  4. Step 4: Simplify right side
    16,770.66x = 215,628,667.14
  5. Step 5: Solve for x
    x = 215,628,667.14/16,770.66
  6. Step 6: Final answer
    x = 12,857.49

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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.