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Finding the Fourth Proportional to 18,336.16, 27,499.81 and 8,465.95

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Solution

The fourth proportional to 18,336.16, 27,499.81 and 8,465.95 is: 12,696.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,336.16 : 27,499.81 = 8,465.95 : x
  2. Step 2: Convert to fraction form
    18,336.16/27,499.81 = 8,465.95/x
  3. Step 3: Cross multiply
    18,336.16x = 27,499.81 × 8,465.95
  4. Step 4: Simplify right side
    18,336.16x = 232,812,016.47
  5. Step 5: Solve for x
    x = 232,812,016.47/18,336.16
  6. Step 6: Final answer
    x = 12,696.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.