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Finding the Fourth Proportional to 6,615.92, 9,931.18 and 3,328.14

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Solution

The fourth proportional to 6,615.92, 9,931.18 and 3,328.14 is: 4,995.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.92 : 9,931.18 = 3,328.14 : x
  2. Step 2: Convert to fraction form
    6,615.92/9,931.18 = 3,328.14/x
  3. Step 3: Cross multiply
    6,615.92x = 9,931.18 × 3,328.14
  4. Step 4: Simplify right side
    6,615.92x = 33,052,357.41
  5. Step 5: Solve for x
    x = 33,052,357.41/6,615.92
  6. Step 6: Final answer
    x = 4,995.88

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Why These Related Problems?

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