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Finding the Fourth Proportional to 86,361.74, 129,542.61 and 33,734.32

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Solution

The fourth proportional to 86,361.74, 129,542.61 and 33,734.32 is: 50,601.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,361.74 : 129,542.61 = 33,734.32 : x
  2. Step 2: Convert to fraction form
    86,361.74/129,542.61 = 33,734.32/x
  3. Step 3: Cross multiply
    86,361.74x = 129,542.61 × 33,734.32
  4. Step 4: Simplify right side
    86,361.74x = 4,370,032,026.36
  5. Step 5: Solve for x
    x = 4,370,032,026.36/86,361.74
  6. Step 6: Final answer
    x = 50,601.48

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.