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Finding the Fourth Proportional to 44,961.88, 61,998.78 and 30,631

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Solution

The fourth proportional to 44,961.88, 61,998.78 and 30,631 is: 42,237.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,961.88 : 61,998.78 = 30,631 : x
  2. Step 2: Convert to fraction form
    44,961.88/61,998.78 = 30,631/x
  3. Step 3: Cross multiply
    44,961.88x = 61,998.78 × 30,631
  4. Step 4: Simplify right side
    44,961.88x = 1,899,084,630.18
  5. Step 5: Solve for x
    x = 1,899,084,630.18/44,961.88
  6. Step 6: Final answer
    x = 42,237.66

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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.