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Finding the Fourth Proportional to 57,780.68, 86,674.10 and 18,340.88

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Solution

The fourth proportional to 57,780.68, 86,674.10 and 18,340.88 is: 27,512.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,780.68 : 86,674.10 = 18,340.88 : x
  2. Step 2: Convert to fraction form
    57,780.68/86,674.10 = 18,340.88/x
  3. Step 3: Cross multiply
    57,780.68x = 86,674.10 × 18,340.88
  4. Step 4: Simplify right side
    57,780.68x = 1,589,679,267.21
  5. Step 5: Solve for x
    x = 1,589,679,267.21/57,780.68
  6. Step 6: Final answer
    x = 27,512.30

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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.