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Finding the Fourth Proportional to 18,458.76, 27,671.04 and 7,362.72

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Solution

The fourth proportional to 18,458.76, 27,671.04 and 7,362.72 is: 11,037.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,458.76 : 27,671.04 = 7,362.72 : x
  2. Step 2: Convert to fraction form
    18,458.76/27,671.04 = 7,362.72/x
  3. Step 3: Cross multiply
    18,458.76x = 27,671.04 × 7,362.72
  4. Step 4: Simplify right side
    18,458.76x = 203,734,119.63
  5. Step 5: Solve for x
    x = 203,734,119.63/18,458.76
  6. Step 6: Final answer
    x = 11,037.26

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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.