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Finding the Fourth Proportional to 11,399.97, 15,729.18 and 6,683.34

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Solution

The fourth proportional to 11,399.97, 15,729.18 and 6,683.34 is: 9,221.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,399.97 : 15,729.18 = 6,683.34 : x
  2. Step 2: Convert to fraction form
    11,399.97/15,729.18 = 6,683.34/x
  3. Step 3: Cross multiply
    11,399.97x = 15,729.18 × 6,683.34
  4. Step 4: Simplify right side
    11,399.97x = 105,123,457.86
  5. Step 5: Solve for x
    x = 105,123,457.86/11,399.97
  6. Step 6: Final answer
    x = 9,221.38

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Why These Related Problems?

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