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Finding the Fourth Proportional to 16,464.26, 22,720.86 and 9,391.10

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Solution

The fourth proportional to 16,464.26, 22,720.86 and 9,391.10 is: 12,959.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,464.26 : 22,720.86 = 9,391.10 : x
  2. Step 2: Convert to fraction form
    16,464.26/22,720.86 = 9,391.10/x
  3. Step 3: Cross multiply
    16,464.26x = 22,720.86 × 9,391.10
  4. Step 4: Simplify right side
    16,464.26x = 213,373,868.35
  5. Step 5: Solve for x
    x = 213,373,868.35/16,464.26
  6. Step 6: Final answer
    x = 12,959.82

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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.