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Finding the Fourth Proportional to 9,363.56, 12,921.36 and 5,114.48

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Solution

The fourth proportional to 9,363.56, 12,921.36 and 5,114.48 is: 7,057.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,363.56 : 12,921.36 = 5,114.48 : x
  2. Step 2: Convert to fraction form
    9,363.56/12,921.36 = 5,114.48/x
  3. Step 3: Cross multiply
    9,363.56x = 12,921.36 × 5,114.48
  4. Step 4: Simplify right side
    9,363.56x = 66,086,037.29
  5. Step 5: Solve for x
    x = 66,086,037.29/9,363.56
  6. Step 6: Final answer
    x = 7,057.79

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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.