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Finding the Fourth Proportional to 7,940.93, 11,909.47 and 2,674.58

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Solution

The fourth proportional to 7,940.93, 11,909.47 and 2,674.58 is: 4,011.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.93 : 11,909.47 = 2,674.58 : x
  2. Step 2: Convert to fraction form
    7,940.93/11,909.47 = 2,674.58/x
  3. Step 3: Cross multiply
    7,940.93x = 11,909.47 × 2,674.58
  4. Step 4: Simplify right side
    7,940.93x = 31,852,836.04
  5. Step 5: Solve for x
    x = 31,852,836.04/7,940.93
  6. Step 6: Final answer
    x = 4,011.22

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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.