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Finding the Fourth Proportional to 7,682.72, 11,509.30 and 4,712.49

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Solution

The fourth proportional to 7,682.72, 11,509.30 and 4,712.49 is: 7,059.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,682.72 : 11,509.30 = 4,712.49 : x
  2. Step 2: Convert to fraction form
    7,682.72/11,509.30 = 4,712.49/x
  3. Step 3: Cross multiply
    7,682.72x = 11,509.30 × 4,712.49
  4. Step 4: Simplify right side
    7,682.72x = 54,237,461.16
  5. Step 5: Solve for x
    x = 54,237,461.16/7,682.72
  6. Step 6: Final answer
    x = 7,059.67

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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.