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Finding the Fourth Proportional to 71,611.97, 98,813.54 and 41,391.47

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Solution

The fourth proportional to 71,611.97, 98,813.54 and 41,391.47 is: 57,113.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,611.97 : 98,813.54 = 41,391.47 : x
  2. Step 2: Convert to fraction form
    71,611.97/98,813.54 = 41,391.47/x
  3. Step 3: Cross multiply
    71,611.97x = 98,813.54 × 41,391.47
  4. Step 4: Simplify right side
    71,611.97x = 4,090,037,182.44
  5. Step 5: Solve for x
    x = 4,090,037,182.44/71,611.97
  6. Step 6: Final answer
    x = 57,113.88

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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.