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Finding the Fourth Proportional to 11,045.56, 15,234.60 and 7,688.56

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Solution

The fourth proportional to 11,045.56, 15,234.60 and 7,688.56 is: 10,604.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,045.56 : 15,234.60 = 7,688.56 : x
  2. Step 2: Convert to fraction form
    11,045.56/15,234.60 = 7,688.56/x
  3. Step 3: Cross multiply
    11,045.56x = 15,234.60 × 7,688.56
  4. Step 4: Simplify right side
    11,045.56x = 117,132,136.18
  5. Step 5: Solve for x
    x = 117,132,136.18/11,045.56
  6. Step 6: Final answer
    x = 10,604.45

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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.