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Finding the Fourth Proportional to 21,807.45, 32,731.61 and 10,722.11

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Solution

The fourth proportional to 21,807.45, 32,731.61 and 10,722.11 is: 16,093.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,807.45 : 32,731.61 = 10,722.11 : x
  2. Step 2: Convert to fraction form
    21,807.45/32,731.61 = 10,722.11/x
  3. Step 3: Cross multiply
    21,807.45x = 32,731.61 × 10,722.11
  4. Step 4: Simplify right side
    21,807.45x = 350,951,705.63
  5. Step 5: Solve for x
    x = 350,951,705.63/21,807.45
  6. Step 6: Final answer
    x = 16,093.20

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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.