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Finding the Fourth Proportional to 12,000.72, 17,992.44 and 7,374

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Solution

The fourth proportional to 12,000.72, 17,992.44 and 7,374 is: 11,055.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.72 : 17,992.44 = 7,374 : x
  2. Step 2: Convert to fraction form
    12,000.72/17,992.44 = 7,374/x
  3. Step 3: Cross multiply
    12,000.72x = 17,992.44 × 7,374
  4. Step 4: Simplify right side
    12,000.72x = 132,676,252.56
  5. Step 5: Solve for x
    x = 132,676,252.56/12,000.72
  6. Step 6: Final answer
    x = 11,055.69

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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.