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Finding the Fourth Proportional to 43,719.03, 65,571.49 and 15,634.31

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Solution

The fourth proportional to 43,719.03, 65,571.49 and 15,634.31 is: 23,448.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,719.03 : 65,571.49 = 15,634.31 : x
  2. Step 2: Convert to fraction form
    43,719.03/65,571.49 = 15,634.31/x
  3. Step 3: Cross multiply
    43,719.03x = 65,571.49 × 15,634.31
  4. Step 4: Simplify right side
    43,719.03x = 1,025,165,001.82
  5. Step 5: Solve for x
    x = 1,025,165,001.82/43,719.03
  6. Step 6: Final answer
    x = 23,448.94

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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.