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Finding the Fourth Proportional to 170,863.94, 256,316.44 and 71,091.66

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Solution

The fourth proportional to 170,863.94, 256,316.44 and 71,091.66 is: 106,646.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,863.94 : 256,316.44 = 71,091.66 : x
  2. Step 2: Convert to fraction form
    170,863.94/256,316.44 = 71,091.66/x
  3. Step 3: Cross multiply
    170,863.94x = 256,316.44 × 71,091.66
  4. Step 4: Simplify right side
    170,863.94x = 18,221,961,204.89
  5. Step 5: Solve for x
    x = 18,221,961,204.89/170,863.94
  6. Step 6: Final answer
    x = 106,646.03

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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.