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Finding the Fourth Proportional to 8,645.94, 11,926.44 and 8,062.74

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Solution

The fourth proportional to 8,645.94, 11,926.44 and 8,062.74 is: 11,121.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,645.94 : 11,926.44 = 8,062.74 : x
  2. Step 2: Convert to fraction form
    8,645.94/11,926.44 = 8,062.74/x
  3. Step 3: Cross multiply
    8,645.94x = 11,926.44 × 8,062.74
  4. Step 4: Simplify right side
    8,645.94x = 96,159,784.85
  5. Step 5: Solve for x
    x = 96,159,784.85/8,645.94
  6. Step 6: Final answer
    x = 11,121.96

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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.