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Finding the Fourth Proportional to 57,786.80, 86,488.20 and 41,946.80

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Solution

The fourth proportional to 57,786.80, 86,488.20 and 41,946.80 is: 62,780.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,786.80 : 86,488.20 = 41,946.80 : x
  2. Step 2: Convert to fraction form
    57,786.80/86,488.20 = 41,946.80/x
  3. Step 3: Cross multiply
    57,786.80x = 86,488.20 × 41,946.80
  4. Step 4: Simplify right side
    57,786.80x = 3,627,903,227.76
  5. Step 5: Solve for x
    x = 3,627,903,227.76/57,786.80
  6. Step 6: Final answer
    x = 62,780.83

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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.