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Finding the Fourth Proportional to 18,326.46, 25,290.48 and 9,942.96

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Solution

The fourth proportional to 18,326.46, 25,290.48 and 9,942.96 is: 13,721.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,326.46 : 25,290.48 = 9,942.96 : x
  2. Step 2: Convert to fraction form
    18,326.46/25,290.48 = 9,942.96/x
  3. Step 3: Cross multiply
    18,326.46x = 25,290.48 × 9,942.96
  4. Step 4: Simplify right side
    18,326.46x = 251,462,231.02
  5. Step 5: Solve for x
    x = 251,462,231.02/18,326.46
  6. Step 6: Final answer
    x = 13,721.27

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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.