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Finding the Fourth Proportional to 61,515.92, 84,891.96 and 33,221.60

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Solution

The fourth proportional to 61,515.92, 84,891.96 and 33,221.60 is: 45,845.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,515.92 : 84,891.96 = 33,221.60 : x
  2. Step 2: Convert to fraction form
    61,515.92/84,891.96 = 33,221.60/x
  3. Step 3: Cross multiply
    61,515.92x = 84,891.96 × 33,221.60
  4. Step 4: Simplify right side
    61,515.92x = 2,820,246,738.34
  5. Step 5: Solve for x
    x = 2,820,246,738.34/61,515.92
  6. Step 6: Final answer
    x = 45,845.80

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1.5x scale

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.