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Finding the Fourth Proportional to 18,185.31, 25,090.54 and 10,914.44

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Solution

The fourth proportional to 18,185.31, 25,090.54 and 10,914.44 is: 15,058.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,185.31 : 25,090.54 = 10,914.44 : x
  2. Step 2: Convert to fraction form
    18,185.31/25,090.54 = 10,914.44/x
  3. Step 3: Cross multiply
    18,185.31x = 25,090.54 × 10,914.44
  4. Step 4: Simplify right side
    18,185.31x = 273,849,193.40
  5. Step 5: Solve for x
    x = 273,849,193.40/18,185.31
  6. Step 6: Final answer
    x = 15,058.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.