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Finding the Fourth Proportional to 9,363.28, 12,921.22 and 5,114.29

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Solution

The fourth proportional to 9,363.28, 12,921.22 and 5,114.29 is: 7,057.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,363.28 : 12,921.22 = 5,114.29 : x
  2. Step 2: Convert to fraction form
    9,363.28/12,921.22 = 5,114.29/x
  3. Step 3: Cross multiply
    9,363.28x = 12,921.22 × 5,114.29
  4. Step 4: Simplify right side
    9,363.28x = 66,082,853.45
  5. Step 5: Solve for x
    x = 66,082,853.45/9,363.28
  6. Step 6: Final answer
    x = 7,057.66

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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.