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Finding the Fourth Proportional to 21,050.92, 29,049.83 and 11,491.00

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Solution

The fourth proportional to 21,050.92, 29,049.83 and 11,491.00 is: 15,857.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,050.92 : 29,049.83 = 11,491.00 : x
  2. Step 2: Convert to fraction form
    21,050.92/29,049.83 = 11,491.00/x
  3. Step 3: Cross multiply
    21,050.92x = 29,049.83 × 11,491.00
  4. Step 4: Simplify right side
    21,050.92x = 333,811,552.63
  5. Step 5: Solve for x
    x = 333,811,552.63/21,050.92
  6. Step 6: Final answer
    x = 15,857.34

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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.