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Finding the Fourth Proportional to 10,712.99, 16,069.01 and 2,921.79

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Solution

The fourth proportional to 10,712.99, 16,069.01 and 2,921.79 is: 4,382.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,712.99 : 16,069.01 = 2,921.79 : x
  2. Step 2: Convert to fraction form
    10,712.99/16,069.01 = 2,921.79/x
  3. Step 3: Cross multiply
    10,712.99x = 16,069.01 × 2,921.79
  4. Step 4: Simplify right side
    10,712.99x = 46,950,258.12
  5. Step 5: Solve for x
    x = 46,950,258.12/10,712.99
  6. Step 6: Final answer
    x = 4,382.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.