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Finding the Fourth Proportional to 18,936.24, 26,133.16 and 10,552.72

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Solution

The fourth proportional to 18,936.24, 26,133.16 and 10,552.72 is: 14,563.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.24 : 26,133.16 = 10,552.72 : x
  2. Step 2: Convert to fraction form
    18,936.24/26,133.16 = 10,552.72/x
  3. Step 3: Cross multiply
    18,936.24x = 26,133.16 × 10,552.72
  4. Step 4: Simplify right side
    18,936.24x = 275,775,920.20
  5. Step 5: Solve for x
    x = 275,775,920.20/18,936.24
  6. Step 6: Final answer
    x = 14,563.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.