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Finding the Fourth Proportional to 21,975.01, 32,959.90 and 5,745.04

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Solution

The fourth proportional to 21,975.01, 32,959.90 and 5,745.04 is: 8,616.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,975.01 : 32,959.90 = 5,745.04 : x
  2. Step 2: Convert to fraction form
    21,975.01/32,959.90 = 5,745.04/x
  3. Step 3: Cross multiply
    21,975.01x = 32,959.90 × 5,745.04
  4. Step 4: Simplify right side
    21,975.01x = 189,355,943.90
  5. Step 5: Solve for x
    x = 189,355,943.90/21,975.01
  6. Step 6: Final answer
    x = 8,616.88

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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.