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Finding the Fourth Proportional to 57,680.70, 80,556.15 and 57,680.70

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Solution

The fourth proportional to 57,680.70, 80,556.15 and 57,680.70 is: 80,556.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,680.70 : 80,556.15 = 57,680.70 : x
  2. Step 2: Convert to fraction form
    57,680.70/80,556.15 = 57,680.70/x
  3. Step 3: Cross multiply
    57,680.70x = 80,556.15 × 57,680.70
  4. Step 4: Simplify right side
    57,680.70x = 4,646,535,121.31
  5. Step 5: Solve for x
    x = 4,646,535,121.31/57,680.70
  6. Step 6: Final answer
    x = 80,556.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.