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Finding the Fourth Proportional to 11,373.72, 15,696.96 and 6,661.96

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Solution

The fourth proportional to 11,373.72, 15,696.96 and 6,661.96 is: 9,194.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,373.72 : 15,696.96 = 6,661.96 : x
  2. Step 2: Convert to fraction form
    11,373.72/15,696.96 = 6,661.96/x
  3. Step 3: Cross multiply
    11,373.72x = 15,696.96 × 6,661.96
  4. Step 4: Simplify right side
    11,373.72x = 104,572,519.64
  5. Step 5: Solve for x
    x = 104,572,519.64/11,373.72
  6. Step 6: Final answer
    x = 9,194.22

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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.