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Finding the Fourth Proportional to 21,025.71, 29,015.82 and 11,593.71

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Solution

The fourth proportional to 21,025.71, 29,015.82 and 11,593.71 is: 15,999.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025.71 : 29,015.82 = 11,593.71 : x
  2. Step 2: Convert to fraction form
    21,025.71/29,015.82 = 11,593.71/x
  3. Step 3: Cross multiply
    21,025.71x = 29,015.82 × 11,593.71
  4. Step 4: Simplify right side
    21,025.71x = 336,401,002.49
  5. Step 5: Solve for x
    x = 336,401,002.49/21,025.71
  6. Step 6: Final answer
    x = 15,999.51

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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.