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Finding the Fourth Proportional to 7,942.51, 11,854.94 and 7,008.49

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Solution

The fourth proportional to 7,942.51, 11,854.94 and 7,008.49 is: 10,460.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,942.51 : 11,854.94 = 7,008.49 : x
  2. Step 2: Convert to fraction form
    7,942.51/11,854.94 = 7,008.49/x
  3. Step 3: Cross multiply
    7,942.51x = 11,854.94 × 7,008.49
  4. Step 4: Simplify right side
    7,942.51x = 83,085,228.44
  5. Step 5: Solve for x
    x = 83,085,228.44/7,942.51
  6. Step 6: Final answer
    x = 10,460.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.