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Finding the Fourth Proportional to 19,351.58, 29,040.31 and 7,039.58

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Solution

The fourth proportional to 19,351.58, 29,040.31 and 7,039.58 is: 10,564.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,351.58 : 29,040.31 = 7,039.58 : x
  2. Step 2: Convert to fraction form
    19,351.58/29,040.31 = 7,039.58/x
  3. Step 3: Cross multiply
    19,351.58x = 29,040.31 × 7,039.58
  4. Step 4: Simplify right side
    19,351.58x = 204,431,585.47
  5. Step 5: Solve for x
    x = 204,431,585.47/19,351.58
  6. Step 6: Final answer
    x = 10,564.08

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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.