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Finding the Fourth Proportional to 15,658.22, 21,609.83 and 8,944.85

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Solution

The fourth proportional to 15,658.22, 21,609.83 and 8,944.85 is: 12,344.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,658.22 : 21,609.83 = 8,944.85 : x
  2. Step 2: Convert to fraction form
    15,658.22/21,609.83 = 8,944.85/x
  3. Step 3: Cross multiply
    15,658.22x = 21,609.83 × 8,944.85
  4. Step 4: Simplify right side
    15,658.22x = 193,296,535.10
  5. Step 5: Solve for x
    x = 193,296,535.10/15,658.22
  6. Step 6: Final answer
    x = 12,344.74

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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.