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Finding the Fourth Proportional to 22,205.99, 30,644.15 and 13,134.60

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Solution

The fourth proportional to 22,205.99, 30,644.15 and 13,134.60 is: 18,125.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,205.99 : 30,644.15 = 13,134.60 : x
  2. Step 2: Convert to fraction form
    22,205.99/30,644.15 = 13,134.60/x
  3. Step 3: Cross multiply
    22,205.99x = 30,644.15 × 13,134.60
  4. Step 4: Simplify right side
    22,205.99x = 402,498,652.59
  5. Step 5: Solve for x
    x = 402,498,652.59/22,205.99
  6. Step 6: Final answer
    x = 18,125.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.