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Finding the Fourth Proportional to 8,939.96, 12,335.22 and 6,069.68

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Solution

The fourth proportional to 8,939.96, 12,335.22 and 6,069.68 is: 8,374.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.96 : 12,335.22 = 6,069.68 : x
  2. Step 2: Convert to fraction form
    8,939.96/12,335.22 = 6,069.68/x
  3. Step 3: Cross multiply
    8,939.96x = 12,335.22 × 6,069.68
  4. Step 4: Simplify right side
    8,939.96x = 74,870,776.45
  5. Step 5: Solve for x
    x = 74,870,776.45/8,939.96
  6. Step 6: Final answer
    x = 8,374.85

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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.