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Finding the Fourth Proportional to 61,515.79, 84,891.79 and 33,221.48

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Solution

The fourth proportional to 61,515.79, 84,891.79 and 33,221.48 is: 45,845.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,515.79 : 84,891.79 = 33,221.48 : x
  2. Step 2: Convert to fraction form
    61,515.79/84,891.79 = 33,221.48/x
  3. Step 3: Cross multiply
    61,515.79x = 84,891.79 × 33,221.48
  4. Step 4: Simplify right side
    61,515.79x = 2,820,230,903.65
  5. Step 5: Solve for x
    x = 2,820,230,903.65/61,515.79
  6. Step 6: Final answer
    x = 45,845.64

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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.