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Finding the Fourth Proportional to 60,581.80, 90,872.70 and 57,860.20

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Solution

The fourth proportional to 60,581.80, 90,872.70 and 57,860.20 is: 86,790.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,581.80 : 90,872.70 = 57,860.20 : x
  2. Step 2: Convert to fraction form
    60,581.80/90,872.70 = 57,860.20/x
  3. Step 3: Cross multiply
    60,581.80x = 90,872.70 × 57,860.20
  4. Step 4: Simplify right side
    60,581.80x = 5,257,912,596.54
  5. Step 5: Solve for x
    x = 5,257,912,596.54/60,581.80
  6. Step 6: Final answer
    x = 86,790.30

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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.