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Finding the Fourth Proportional to 18,512.16, 27,768.17 and 5,364.51

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Solution

The fourth proportional to 18,512.16, 27,768.17 and 5,364.51 is: 8,046.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512.16 : 27,768.17 = 5,364.51 : x
  2. Step 2: Convert to fraction form
    18,512.16/27,768.17 = 5,364.51/x
  3. Step 3: Cross multiply
    18,512.16x = 27,768.17 × 5,364.51
  4. Step 4: Simplify right side
    18,512.16x = 148,962,598.82
  5. Step 5: Solve for x
    x = 148,962,598.82/18,512.16
  6. Step 6: Final answer
    x = 8,046.74

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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.