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Finding the Fourth Proportional to 22,205.88, 30,644.52 and 12,646.86

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Solution

The fourth proportional to 22,205.88, 30,644.52 and 12,646.86 is: 17,452.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,205.88 : 30,644.52 = 12,646.86 : x
  2. Step 2: Convert to fraction form
    22,205.88/30,644.52 = 12,646.86/x
  3. Step 3: Cross multiply
    22,205.88x = 30,644.52 × 12,646.86
  4. Step 4: Simplify right side
    22,205.88x = 387,556,954.21
  5. Step 5: Solve for x
    x = 387,556,954.21/22,205.88
  6. Step 6: Final answer
    x = 17,452.90

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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.