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Finding the Fourth Proportional to 11,761.22, 16,229.94 and 6,455.94

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Solution

The fourth proportional to 11,761.22, 16,229.94 and 6,455.94 is: 8,908.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,761.22 : 16,229.94 = 6,455.94 : x
  2. Step 2: Convert to fraction form
    11,761.22/16,229.94 = 6,455.94/x
  3. Step 3: Cross multiply
    11,761.22x = 16,229.94 × 6,455.94
  4. Step 4: Simplify right side
    11,761.22x = 104,779,518.84
  5. Step 5: Solve for x
    x = 104,779,518.84/11,761.22
  6. Step 6: Final answer
    x = 8,908.90

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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.