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Finding the Fourth Proportional to 18,743.88, 25,874.87 and 11,675.01

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Solution

The fourth proportional to 18,743.88, 25,874.87 and 11,675.01 is: 16,116.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.88 : 25,874.87 = 11,675.01 : x
  2. Step 2: Convert to fraction form
    18,743.88/25,874.87 = 11,675.01/x
  3. Step 3: Cross multiply
    18,743.88x = 25,874.87 × 11,675.01
  4. Step 4: Simplify right side
    18,743.88x = 302,089,307.62
  5. Step 5: Solve for x
    x = 302,089,307.62/18,743.88
  6. Step 6: Final answer
    x = 16,116.69

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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.