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Finding the Fourth Proportional to 266,580.81, 399,601.08 and 114,876.72

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Solution

The fourth proportional to 266,580.81, 399,601.08 and 114,876.72 is: 172,198.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,580.81 : 399,601.08 = 114,876.72 : x
  2. Step 2: Convert to fraction form
    266,580.81/399,601.08 = 114,876.72/x
  3. Step 3: Cross multiply
    266,580.81x = 399,601.08 × 114,876.72
  4. Step 4: Simplify right side
    266,580.81x = 45,904,861,378.86
  5. Step 5: Solve for x
    x = 45,904,861,378.86/266,580.81
  6. Step 6: Final answer
    x = 172,198.67

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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.