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Finding the Fourth Proportional to 8,755.76, 12,078.45 and 5,923.26

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Solution

The fourth proportional to 8,755.76, 12,078.45 and 5,923.26 is: 8,171.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.76 : 12,078.45 = 5,923.26 : x
  2. Step 2: Convert to fraction form
    8,755.76/12,078.45 = 5,923.26/x
  3. Step 3: Cross multiply
    8,755.76x = 12,078.45 × 5,923.26
  4. Step 4: Simplify right side
    8,755.76x = 71,543,799.75
  5. Step 5: Solve for x
    x = 71,543,799.75/8,755.76
  6. Step 6: Final answer
    x = 8,171.05

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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.