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Finding the Fourth Proportional to 10,396.91, 14,347.05 and 5,921.12

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Solution

The fourth proportional to 10,396.91, 14,347.05 and 5,921.12 is: 8,170.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,396.91 : 14,347.05 = 5,921.12 : x
  2. Step 2: Convert to fraction form
    10,396.91/14,347.05 = 5,921.12/x
  3. Step 3: Cross multiply
    10,396.91x = 14,347.05 × 5,921.12
  4. Step 4: Simplify right side
    10,396.91x = 84,950,604.70
  5. Step 5: Solve for x
    x = 84,950,604.70/10,396.91
  6. Step 6: Final answer
    x = 8,170.76

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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.