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Finding the Fourth Proportional to 266,366.10, 399,546.41 and 153,974.81

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Solution

The fourth proportional to 266,366.10, 399,546.41 and 153,974.81 is: 230,960.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,366.10 : 399,546.41 = 153,974.81 : x
  2. Step 2: Convert to fraction form
    266,366.10/399,546.41 = 153,974.81/x
  3. Step 3: Cross multiply
    266,366.10x = 399,546.41 × 153,974.81
  4. Step 4: Simplify right side
    266,366.10x = 61,520,082,565.93
  5. Step 5: Solve for x
    x = 61,520,082,565.93/266,366.10
  6. Step 6: Final answer
    x = 230,960.63

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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.