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Finding the Fourth Proportional to 11,612.60, 17,405.92 and 5,028.92

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Solution

The fourth proportional to 11,612.60, 17,405.92 and 5,028.92 is: 7,537.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,612.60 : 17,405.92 = 5,028.92 : x
  2. Step 2: Convert to fraction form
    11,612.60/17,405.92 = 5,028.92/x
  3. Step 3: Cross multiply
    11,612.60x = 17,405.92 × 5,028.92
  4. Step 4: Simplify right side
    11,612.60x = 87,532,979.21
  5. Step 5: Solve for x
    x = 87,532,979.21/11,612.60
  6. Step 6: Final answer
    x = 7,537.76

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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.