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Finding the Fourth Proportional to 11,951.48, 17,921.10 and 7,022.60

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Solution

The fourth proportional to 11,951.48, 17,921.10 and 7,022.60 is: 10,530.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,951.48 : 17,921.10 = 7,022.60 : x
  2. Step 2: Convert to fraction form
    11,951.48/17,921.10 = 7,022.60/x
  3. Step 3: Cross multiply
    11,951.48x = 17,921.10 × 7,022.60
  4. Step 4: Simplify right side
    11,951.48x = 125,852,716.86
  5. Step 5: Solve for x
    x = 125,852,716.86/11,951.48
  6. Step 6: Final answer
    x = 10,530.30

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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.