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Finding the Fourth Proportional to 55,252.90, 82,879.26 and 13,699.90

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Solution

The fourth proportional to 55,252.90, 82,879.26 and 13,699.90 is: 20,549.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,252.90 : 82,879.26 = 13,699.90 : x
  2. Step 2: Convert to fraction form
    55,252.90/82,879.26 = 13,699.90/x
  3. Step 3: Cross multiply
    55,252.90x = 82,879.26 × 13,699.90
  4. Step 4: Simplify right side
    55,252.90x = 1,135,437,574.07
  5. Step 5: Solve for x
    x = 1,135,437,574.07/55,252.90
  6. Step 6: Final answer
    x = 20,549.83

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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.