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Finding the Fourth Proportional to 36,783.60, 55,175.40 and 12,159.60

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Solution

The fourth proportional to 36,783.60, 55,175.40 and 12,159.60 is: 18,239.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,783.60 : 55,175.40 = 12,159.60 : x
  2. Step 2: Convert to fraction form
    36,783.60/55,175.40 = 12,159.60/x
  3. Step 3: Cross multiply
    36,783.60x = 55,175.40 × 12,159.60
  4. Step 4: Simplify right side
    36,783.60x = 670,910,793.84
  5. Step 5: Solve for x
    x = 670,910,793.84/36,783.60
  6. Step 6: Final answer
    x = 18,239.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.