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Finding the Fourth Proportional to 8,674.59, 11,971.10 and 5,091.66

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Solution

The fourth proportional to 8,674.59, 11,971.10 and 5,091.66 is: 7,026.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.59 : 11,971.10 = 5,091.66 : x
  2. Step 2: Convert to fraction form
    8,674.59/11,971.10 = 5,091.66/x
  3. Step 3: Cross multiply
    8,674.59x = 11,971.10 × 5,091.66
  4. Step 4: Simplify right side
    8,674.59x = 60,952,698.44
  5. Step 5: Solve for x
    x = 60,952,698.44/8,674.59
  6. Step 6: Final answer
    x = 7,026.58

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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.