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Finding the Fourth Proportional to 20,603.52, 30,895.20 and 14,366.52

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Solution

The fourth proportional to 20,603.52, 30,895.20 and 14,366.52 is: 21,542.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,603.52 : 30,895.20 = 14,366.52 : x
  2. Step 2: Convert to fraction form
    20,603.52/30,895.20 = 14,366.52/x
  3. Step 3: Cross multiply
    20,603.52x = 30,895.20 × 14,366.52
  4. Step 4: Simplify right side
    20,603.52x = 443,856,508.70
  5. Step 5: Solve for x
    x = 443,856,508.70/20,603.52
  6. Step 6: Final answer
    x = 21,542.75

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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.