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Finding the Fourth Proportional to 61,515.44, 84,891.30 and 33,221.13

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Solution

The fourth proportional to 61,515.44, 84,891.30 and 33,221.13 is: 45,845.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,515.44 : 84,891.30 = 33,221.13 : x
  2. Step 2: Convert to fraction form
    61,515.44/84,891.30 = 33,221.13/x
  3. Step 3: Cross multiply
    61,515.44x = 84,891.30 × 33,221.13
  4. Step 4: Simplify right side
    61,515.44x = 2,820,184,913.17
  5. Step 5: Solve for x
    x = 2,820,184,913.17/61,515.44
  6. Step 6: Final answer
    x = 45,845.16

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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.