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Finding the Fourth Proportional to 15,062.96, 20,786.36 and 8,349.22

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Solution

The fourth proportional to 15,062.96, 20,786.36 and 8,349.22 is: 11,521.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,062.96 : 20,786.36 = 8,349.22 : x
  2. Step 2: Convert to fraction form
    15,062.96/20,786.36 = 8,349.22/x
  3. Step 3: Cross multiply
    15,062.96x = 20,786.36 × 8,349.22
  4. Step 4: Simplify right side
    15,062.96x = 173,549,798.93
  5. Step 5: Solve for x
    x = 173,549,798.93/15,062.96
  6. Step 6: Final answer
    x = 11,521.62

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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.