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Finding the Fourth Proportional to 19,899.80, 29,850.02 and 6,752.51

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Solution

The fourth proportional to 19,899.80, 29,850.02 and 6,752.51 is: 10,128.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,899.80 : 29,850.02 = 6,752.51 : x
  2. Step 2: Convert to fraction form
    19,899.80/29,850.02 = 6,752.51/x
  3. Step 3: Cross multiply
    19,899.80x = 29,850.02 × 6,752.51
  4. Step 4: Simplify right side
    19,899.80x = 201,562,375.54
  5. Step 5: Solve for x
    x = 201,562,375.54/19,899.80
  6. Step 6: Final answer
    x = 10,128.87

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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.