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Finding the Fourth Proportional to 11,155, 16,722.96 and 4,577.08

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Solution

The fourth proportional to 11,155, 16,722.96 and 4,577.08 is: 6,861.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155 : 16,722.96 = 4,577.08 : x
  2. Step 2: Convert to fraction form
    11,155/16,722.96 = 4,577.08/x
  3. Step 3: Cross multiply
    11,155x = 16,722.96 × 4,577.08
  4. Step 4: Simplify right side
    11,155x = 76,542,325.76
  5. Step 5: Solve for x
    x = 76,542,325.76/11,155
  6. Step 6: Final answer
    x = 6,861.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.