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Finding the Fourth Proportional to 8,810.18, 13,216.92 and 7,181

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Solution

The fourth proportional to 8,810.18, 13,216.92 and 7,181 is: 10,772.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,810.18 : 13,216.92 = 7,181 : x
  2. Step 2: Convert to fraction form
    8,810.18/13,216.92 = 7,181/x
  3. Step 3: Cross multiply
    8,810.18x = 13,216.92 × 7,181
  4. Step 4: Simplify right side
    8,810.18x = 94,910,702.52
  5. Step 5: Solve for x
    x = 94,910,702.52/8,810.18
  6. Step 6: Final answer
    x = 10,772.84

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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.