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Finding the Fourth Proportional to 211,247.94, 316,923.89 and 61,489.61

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Solution

The fourth proportional to 211,247.94, 316,923.89 and 61,489.61 is: 92,249.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,247.94 : 316,923.89 = 61,489.61 : x
  2. Step 2: Convert to fraction form
    211,247.94/316,923.89 = 61,489.61/x
  3. Step 3: Cross multiply
    211,247.94x = 316,923.89 × 61,489.61
  4. Step 4: Simplify right side
    211,247.94x = 19,487,524,503.72
  5. Step 5: Solve for x
    x = 19,487,524,503.72/211,247.94
  6. Step 6: Final answer
    x = 92,249.54

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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.