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Finding the Fourth Proportional to 10,248.76, 15,379.24 and 5,318.36

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Solution

The fourth proportional to 10,248.76, 15,379.24 and 5,318.36 is: 7,980.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,248.76 : 15,379.24 = 5,318.36 : x
  2. Step 2: Convert to fraction form
    10,248.76/15,379.24 = 5,318.36/x
  3. Step 3: Cross multiply
    10,248.76x = 15,379.24 × 5,318.36
  4. Step 4: Simplify right side
    10,248.76x = 81,792,334.85
  5. Step 5: Solve for x
    x = 81,792,334.85/10,248.76
  6. Step 6: Final answer
    x = 7,980.71

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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.