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Finding the Fourth Proportional to 83,786.88, 125,613.60 and 57,410.88

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Solution

The fourth proportional to 83,786.88, 125,613.60 and 57,410.88 is: 86,070.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,786.88 : 125,613.60 = 57,410.88 : x
  2. Step 2: Convert to fraction form
    83,786.88/125,613.60 = 57,410.88/x
  3. Step 3: Cross multiply
    83,786.88x = 125,613.60 × 57,410.88
  4. Step 4: Simplify right side
    83,786.88x = 7,211,587,315.97
  5. Step 5: Solve for x
    x = 7,211,587,315.97/83,786.88
  6. Step 6: Final answer
    x = 86,070.60

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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.