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Finding the Fourth Proportional to 21,855.68, 32,784.96 and 6,273.44

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Solution

The fourth proportional to 21,855.68, 32,784.96 and 6,273.44 is: 9,410.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,855.68 : 32,784.96 = 6,273.44 : x
  2. Step 2: Convert to fraction form
    21,855.68/32,784.96 = 6,273.44/x
  3. Step 3: Cross multiply
    21,855.68x = 32,784.96 × 6,273.44
  4. Step 4: Simplify right side
    21,855.68x = 205,674,479.46
  5. Step 5: Solve for x
    x = 205,674,479.46/21,855.68
  6. Step 6: Final answer
    x = 9,410.57

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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.