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Finding the Fourth Proportional to 11,135.80, 16,701.30 and 4,895.80

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Solution

The fourth proportional to 11,135.80, 16,701.30 and 4,895.80 is: 7,342.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,135.80 : 16,701.30 = 4,895.80 : x
  2. Step 2: Convert to fraction form
    11,135.80/16,701.30 = 4,895.80/x
  3. Step 3: Cross multiply
    11,135.80x = 16,701.30 × 4,895.80
  4. Step 4: Simplify right side
    11,135.80x = 81,766,224.54
  5. Step 5: Solve for x
    x = 81,766,224.54/11,135.80
  6. Step 6: Final answer
    x = 7,342.64

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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.