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Finding the Fourth Proportional to 13,616.54, 20,414.44 and 7,038.53

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Solution

The fourth proportional to 13,616.54, 20,414.44 and 7,038.53 is: 10,552.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,616.54 : 20,414.44 = 7,038.53 : x
  2. Step 2: Convert to fraction form
    13,616.54/20,414.44 = 7,038.53/x
  3. Step 3: Cross multiply
    13,616.54x = 20,414.44 × 7,038.53
  4. Step 4: Simplify right side
    13,616.54x = 143,687,511.11
  5. Step 5: Solve for x
    x = 143,687,511.11/13,616.54
  6. Step 6: Final answer
    x = 10,552.43

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1.5x scale

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.