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Finding the Fourth Proportional to 10,712.41, 16,040.92 and 7,390.90

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Solution

The fourth proportional to 10,712.41, 16,040.92 and 7,390.90 is: 11,067.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,712.41 : 16,040.92 = 7,390.90 : x
  2. Step 2: Convert to fraction form
    10,712.41/16,040.92 = 7,390.90/x
  3. Step 3: Cross multiply
    10,712.41x = 16,040.92 × 7,390.90
  4. Step 4: Simplify right side
    10,712.41x = 118,556,835.63
  5. Step 5: Solve for x
    x = 118,556,835.63/10,712.41
  6. Step 6: Final answer
    x = 11,067.24

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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.