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Finding the Fourth Proportional to 211,161.67, 316,773.38 and 61,382.49

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Solution

The fourth proportional to 211,161.67, 316,773.38 and 61,382.49 is: 92,082.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,161.67 : 316,773.38 = 61,382.49 : x
  2. Step 2: Convert to fraction form
    211,161.67/316,773.38 = 61,382.49/x
  3. Step 3: Cross multiply
    211,161.67x = 316,773.38 × 61,382.49
  4. Step 4: Simplify right side
    211,161.67x = 19,444,338,983.57
  5. Step 5: Solve for x
    x = 19,444,338,983.57/211,161.67
  6. Step 6: Final answer
    x = 92,082.71

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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.