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Finding the Fourth Proportional to 19,100.60, 28,650.90 and 18,007.10

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Solution

The fourth proportional to 19,100.60, 28,650.90 and 18,007.10 is: 27,010.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,100.60 : 28,650.90 = 18,007.10 : x
  2. Step 2: Convert to fraction form
    19,100.60/28,650.90 = 18,007.10/x
  3. Step 3: Cross multiply
    19,100.60x = 28,650.90 × 18,007.10
  4. Step 4: Simplify right side
    19,100.60x = 515,919,621.39
  5. Step 5: Solve for x
    x = 515,919,621.39/19,100.60
  6. Step 6: Final answer
    x = 27,010.65

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Similar ratio
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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.