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Finding the Fourth Proportional to 21,818.73, 32,729.73 and 6,237.57

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Solution

The fourth proportional to 21,818.73, 32,729.73 and 6,237.57 is: 9,356.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,818.73 : 32,729.73 = 6,237.57 : x
  2. Step 2: Convert to fraction form
    21,818.73/32,729.73 = 6,237.57/x
  3. Step 3: Cross multiply
    21,818.73x = 32,729.73 × 6,237.57
  4. Step 4: Simplify right side
    21,818.73x = 204,153,981.96
  5. Step 5: Solve for x
    x = 204,153,981.96/21,818.73
  6. Step 6: Final answer
    x = 9,356.82

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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.