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Finding the Fourth Proportional to 29,278.71, 43,918.09 and 7,092.11

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Solution

The fourth proportional to 29,278.71, 43,918.09 and 7,092.11 is: 10,638.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,278.71 : 43,918.09 = 7,092.11 : x
  2. Step 2: Convert to fraction form
    29,278.71/43,918.09 = 7,092.11/x
  3. Step 3: Cross multiply
    29,278.71x = 43,918.09 × 7,092.11
  4. Step 4: Simplify right side
    29,278.71x = 311,472,017.33
  5. Step 5: Solve for x
    x = 311,472,017.33/29,278.71
  6. Step 6: Final answer
    x = 10,638.17

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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.