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Finding the Fourth Proportional to 15,062.94, 20,786.86 and 8,349.58

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Solution

The fourth proportional to 15,062.94, 20,786.86 and 8,349.58 is: 11,522.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,062.94 : 20,786.86 = 8,349.58 : x
  2. Step 2: Convert to fraction form
    15,062.94/20,786.86 = 8,349.58/x
  3. Step 3: Cross multiply
    15,062.94x = 20,786.86 × 8,349.58
  4. Step 4: Simplify right side
    15,062.94x = 173,561,477.68
  5. Step 5: Solve for x
    x = 173,561,477.68/15,062.94
  6. Step 6: Final answer
    x = 11,522.42

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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.