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Finding the Fourth Proportional to 61,965.68, 85,469.40 and 40,738.16

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Solution

The fourth proportional to 61,965.68, 85,469.40 and 40,738.16 is: 56,190.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,965.68 : 85,469.40 = 40,738.16 : x
  2. Step 2: Convert to fraction form
    61,965.68/85,469.40 = 40,738.16/x
  3. Step 3: Cross multiply
    61,965.68x = 85,469.40 × 40,738.16
  4. Step 4: Simplify right side
    61,965.68x = 3,481,866,092.30
  5. Step 5: Solve for x
    x = 3,481,866,092.30/61,965.68
  6. Step 6: Final answer
    x = 56,190.23

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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.