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Finding the Fourth Proportional to 13,161.66, 18,162.54 and 7,193.58

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Solution

The fourth proportional to 13,161.66, 18,162.54 and 7,193.58 is: 9,926.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.66 : 18,162.54 = 7,193.58 : x
  2. Step 2: Convert to fraction form
    13,161.66/18,162.54 = 7,193.58/x
  3. Step 3: Cross multiply
    13,161.66x = 18,162.54 × 7,193.58
  4. Step 4: Simplify right side
    13,161.66x = 130,653,684.49
  5. Step 5: Solve for x
    x = 130,653,684.49/13,161.66
  6. Step 6: Final answer
    x = 9,926.84

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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.