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Finding the Fourth Proportional to 57,891.65, 86,836.56 and 18,448.19

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Solution

The fourth proportional to 57,891.65, 86,836.56 and 18,448.19 is: 27,671.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,891.65 : 86,836.56 = 18,448.19 : x
  2. Step 2: Convert to fraction form
    57,891.65/86,836.56 = 18,448.19/x
  3. Step 3: Cross multiply
    57,891.65x = 86,836.56 × 18,448.19
  4. Step 4: Simplify right side
    57,891.65x = 1,601,977,180.10
  5. Step 5: Solve for x
    x = 1,601,977,180.10/57,891.65
  6. Step 6: Final answer
    x = 27,671.99

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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.