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Finding the Fourth Proportional to 18,571.74, 27,867.18 and 12,336.06

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Solution

The fourth proportional to 18,571.74, 27,867.18 and 12,336.06 is: 18,510.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,571.74 : 27,867.18 = 12,336.06 : x
  2. Step 2: Convert to fraction form
    18,571.74/27,867.18 = 12,336.06/x
  3. Step 3: Cross multiply
    18,571.74x = 27,867.18 × 12,336.06
  4. Step 4: Simplify right side
    18,571.74x = 343,771,204.51
  5. Step 5: Solve for x
    x = 343,771,204.51/18,571.74
  6. Step 6: Final answer
    x = 18,510.45

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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.