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Finding the Fourth Proportional to 21,940.83, 32,904.96 and 7,151.04

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Solution

The fourth proportional to 21,940.83, 32,904.96 and 7,151.04 is: 10,724.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,940.83 : 32,904.96 = 7,151.04 : x
  2. Step 2: Convert to fraction form
    21,940.83/32,904.96 = 7,151.04/x
  3. Step 3: Cross multiply
    21,940.83x = 32,904.96 × 7,151.04
  4. Step 4: Simplify right side
    21,940.83x = 235,304,685.16
  5. Step 5: Solve for x
    x = 235,304,685.16/21,940.83
  6. Step 6: Final answer
    x = 10,724.51

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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.