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Finding the Fourth Proportional to 25,291.48, 37,918.44 and 12,131.32

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Solution

The fourth proportional to 25,291.48, 37,918.44 and 12,131.32 is: 18,187.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,291.48 : 37,918.44 = 12,131.32 : x
  2. Step 2: Convert to fraction form
    25,291.48/37,918.44 = 12,131.32/x
  3. Step 3: Cross multiply
    25,291.48x = 37,918.44 × 12,131.32
  4. Step 4: Simplify right side
    25,291.48x = 460,000,729.54
  5. Step 5: Solve for x
    x = 460,000,729.54/25,291.48
  6. Step 6: Final answer
    x = 18,187.97

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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.