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Finding the Fourth Proportional to 21,656.52, 32,462.46 and 8,325.90

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Solution

The fourth proportional to 21,656.52, 32,462.46 and 8,325.90 is: 12,480.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,656.52 : 32,462.46 = 8,325.90 : x
  2. Step 2: Convert to fraction form
    21,656.52/32,462.46 = 8,325.90/x
  3. Step 3: Cross multiply
    21,656.52x = 32,462.46 × 8,325.90
  4. Step 4: Simplify right side
    21,656.52x = 270,279,195.71
  5. Step 5: Solve for x
    x = 270,279,195.71/21,656.52
  6. Step 6: Final answer
    x = 12,480.27

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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.