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Finding the Fourth Proportional to 43,342.90, 65,013.99 and 11,752.90

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Solution

The fourth proportional to 43,342.90, 65,013.99 and 11,752.90 is: 17,629.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,342.90 : 65,013.99 = 11,752.90 : x
  2. Step 2: Convert to fraction form
    43,342.90/65,013.99 = 11,752.90/x
  3. Step 3: Cross multiply
    43,342.90x = 65,013.99 × 11,752.90
  4. Step 4: Simplify right side
    43,342.90x = 764,102,923.07
  5. Step 5: Solve for x
    x = 764,102,923.07/43,342.90
  6. Step 6: Final answer
    x = 17,629.25

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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.