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Finding the Fourth Proportional to 12,479.73, 18,624.08 and 11,148.53

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Solution

The fourth proportional to 12,479.73, 18,624.08 and 11,148.53 is: 16,637.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.73 : 18,624.08 = 11,148.53 : x
  2. Step 2: Convert to fraction form
    12,479.73/18,624.08 = 11,148.53/x
  3. Step 3: Cross multiply
    12,479.73x = 18,624.08 × 11,148.53
  4. Step 4: Simplify right side
    12,479.73x = 207,631,175.14
  5. Step 5: Solve for x
    x = 207,631,175.14/12,479.73
  6. Step 6: Final answer
    x = 16,637.47

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.