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Finding the Fourth Proportional to 19,879.17, 29,822.40 and 8,186.01

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Solution

The fourth proportional to 19,879.17, 29,822.40 and 8,186.01 is: 12,280.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.17 : 29,822.40 = 8,186.01 : x
  2. Step 2: Convert to fraction form
    19,879.17/29,822.40 = 8,186.01/x
  3. Step 3: Cross multiply
    19,879.17x = 29,822.40 × 8,186.01
  4. Step 4: Simplify right side
    19,879.17x = 244,126,464.62
  5. Step 5: Solve for x
    x = 244,126,464.62/19,879.17
  6. Step 6: Final answer
    x = 12,280.52

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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.