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Finding the Fourth Proportional to 8,808.35, 12,153.44 and 6,446.39

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Solution

The fourth proportional to 8,808.35, 12,153.44 and 6,446.39 is: 8,894.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,808.35 : 12,153.44 = 6,446.39 : x
  2. Step 2: Convert to fraction form
    8,808.35/12,153.44 = 6,446.39/x
  3. Step 3: Cross multiply
    8,808.35x = 12,153.44 × 6,446.39
  4. Step 4: Simplify right side
    8,808.35x = 78,345,769.43
  5. Step 5: Solve for x
    x = 78,345,769.43/8,808.35
  6. Step 6: Final answer
    x = 8,894.49

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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.