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Finding the Fourth Proportional to 7,456.80, 11,185.20 and 7,092.30

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Solution

The fourth proportional to 7,456.80, 11,185.20 and 7,092.30 is: 10,638.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,456.80 : 11,185.20 = 7,092.30 : x
  2. Step 2: Convert to fraction form
    7,456.80/11,185.20 = 7,092.30/x
  3. Step 3: Cross multiply
    7,456.80x = 11,185.20 × 7,092.30
  4. Step 4: Simplify right side
    7,456.80x = 79,328,793.96
  5. Step 5: Solve for x
    x = 79,328,793.96/7,456.80
  6. Step 6: Final answer
    x = 10,638.45

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.