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Finding the Fourth Proportional to 53,361.44, 80,042.13 and 13,918.44

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Solution

The fourth proportional to 53,361.44, 80,042.13 and 13,918.44 is: 20,877.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,361.44 : 80,042.13 = 13,918.44 : x
  2. Step 2: Convert to fraction form
    53,361.44/80,042.13 = 13,918.44/x
  3. Step 3: Cross multiply
    53,361.44x = 80,042.13 × 13,918.44
  4. Step 4: Simplify right side
    53,361.44x = 1,114,061,583.88
  5. Step 5: Solve for x
    x = 1,114,061,583.88/53,361.44
  6. Step 6: Final answer
    x = 20,877.65

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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.