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Finding the Fourth Proportional to 57,785.58, 86,670.60 and 18,346.68

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Solution

The fourth proportional to 57,785.58, 86,670.60 and 18,346.68 is: 27,517.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,785.58 : 86,670.60 = 18,346.68 : x
  2. Step 2: Convert to fraction form
    57,785.58/86,670.60 = 18,346.68/x
  3. Step 3: Cross multiply
    57,785.58x = 86,670.60 × 18,346.68
  4. Step 4: Simplify right side
    57,785.58x = 1,590,117,763.61
  5. Step 5: Solve for x
    x = 1,590,117,763.61/57,785.58
  6. Step 6: Final answer
    x = 27,517.55

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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.