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Finding the Fourth Proportional to 11,221.56, 15,488.89 and 6,504.93

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Solution

The fourth proportional to 11,221.56, 15,488.89 and 6,504.93 is: 8,978.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.56 : 15,488.89 = 6,504.93 : x
  2. Step 2: Convert to fraction form
    11,221.56/15,488.89 = 6,504.93/x
  3. Step 3: Cross multiply
    11,221.56x = 15,488.89 × 6,504.93
  4. Step 4: Simplify right side
    11,221.56x = 100,754,128.97
  5. Step 5: Solve for x
    x = 100,754,128.97/11,221.56
  6. Step 6: Final answer
    x = 8,978.62

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