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Finding the Fourth Proportional to 17,861.86, 24,650.76 and 9,905.64

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Solution

The fourth proportional to 17,861.86, 24,650.76 and 9,905.64 is: 13,670.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,861.86 : 24,650.76 = 9,905.64 : x
  2. Step 2: Convert to fraction form
    17,861.86/24,650.76 = 9,905.64/x
  3. Step 3: Cross multiply
    17,861.86x = 24,650.76 × 9,905.64
  4. Step 4: Simplify right side
    17,861.86x = 244,181,554.29
  5. Step 5: Solve for x
    x = 244,181,554.29/17,861.86
  6. Step 6: Final answer
    x = 13,670.56

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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.