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Finding the Fourth Proportional to 19,661.28, 29,481.04 and 7,803.04

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Solution

The fourth proportional to 19,661.28, 29,481.04 and 7,803.04 is: 11,700.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,661.28 : 29,481.04 = 7,803.04 : x
  2. Step 2: Convert to fraction form
    19,661.28/29,481.04 = 7,803.04/x
  3. Step 3: Cross multiply
    19,661.28x = 29,481.04 × 7,803.04
  4. Step 4: Simplify right side
    19,661.28x = 230,041,734.36
  5. Step 5: Solve for x
    x = 230,041,734.36/19,661.28
  6. Step 6: Final answer
    x = 11,700.24

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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.