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Finding the Fourth Proportional to 11,414.48, 15,765.24 and 7,631.24

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Solution

The fourth proportional to 11,414.48, 15,765.24 and 7,631.24 is: 10,539.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,414.48 : 15,765.24 = 7,631.24 : x
  2. Step 2: Convert to fraction form
    11,414.48/15,765.24 = 7,631.24/x
  3. Step 3: Cross multiply
    11,414.48x = 15,765.24 × 7,631.24
  4. Step 4: Simplify right side
    11,414.48x = 120,308,330.10
  5. Step 5: Solve for x
    x = 120,308,330.10/11,414.48
  6. Step 6: Final answer
    x = 10,539.97

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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.