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Finding the Fourth Proportional to 11,861.46, 17,795.11 and 8,358.31

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Solution

The fourth proportional to 11,861.46, 17,795.11 and 8,358.31 is: 12,539.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.46 : 17,795.11 = 8,358.31 : x
  2. Step 2: Convert to fraction form
    11,861.46/17,795.11 = 8,358.31/x
  3. Step 3: Cross multiply
    11,861.46x = 17,795.11 × 8,358.31
  4. Step 4: Simplify right side
    11,861.46x = 148,737,045.86
  5. Step 5: Solve for x
    x = 148,737,045.86/11,861.46
  6. Step 6: Final answer
    x = 12,539.52

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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.