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Finding the Fourth Proportional to 57,799.66, 86,693.28 and 39,199.09

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Solution

The fourth proportional to 57,799.66, 86,693.28 and 39,199.09 is: 58,794.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,799.66 : 86,693.28 = 39,199.09 : x
  2. Step 2: Convert to fraction form
    57,799.66/86,693.28 = 39,199.09/x
  3. Step 3: Cross multiply
    57,799.66x = 86,693.28 × 39,199.09
  4. Step 4: Simplify right side
    57,799.66x = 3,398,297,685.12
  5. Step 5: Solve for x
    x = 3,398,297,685.12/57,799.66
  6. Step 6: Final answer
    x = 58,794.42

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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.