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Finding the Fourth Proportional to 15,062.39, 20,786.10 and 8,348.45

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Solution

The fourth proportional to 15,062.39, 20,786.10 and 8,348.45 is: 11,520.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,062.39 : 20,786.10 = 8,348.45 : x
  2. Step 2: Convert to fraction form
    15,062.39/20,786.10 = 8,348.45/x
  3. Step 3: Cross multiply
    15,062.39x = 20,786.10 × 8,348.45
  4. Step 4: Simplify right side
    15,062.39x = 173,531,643.71
  5. Step 5: Solve for x
    x = 173,531,643.71/15,062.39
  6. Step 6: Final answer
    x = 11,520.86

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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.