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Finding the Fourth Proportional to 10,796.13, 14,905.55 and 8,811.43

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Solution

The fourth proportional to 10,796.13, 14,905.55 and 8,811.43 is: 12,165.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,796.13 : 14,905.55 = 8,811.43 : x
  2. Step 2: Convert to fraction form
    10,796.13/14,905.55 = 8,811.43/x
  3. Step 3: Cross multiply
    10,796.13x = 14,905.55 × 8,811.43
  4. Step 4: Simplify right side
    10,796.13x = 131,339,210.44
  5. Step 5: Solve for x
    x = 131,339,210.44/10,796.13
  6. Step 6: Final answer
    x = 12,165.40

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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.