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Finding the Fourth Proportional to 143,661.80, 215,505.18 and 43,844.48

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Solution

The fourth proportional to 143,661.80, 215,505.18 and 43,844.48 is: 65,770.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,661.80 : 215,505.18 = 43,844.48 : x
  2. Step 2: Convert to fraction form
    143,661.80/215,505.18 = 43,844.48/x
  3. Step 3: Cross multiply
    143,661.80x = 215,505.18 × 43,844.48
  4. Step 4: Simplify right side
    143,661.80x = 9,448,712,554.41
  5. Step 5: Solve for x
    x = 9,448,712,554.41/143,661.80
  6. Step 6: Final answer
    x = 65,770.53

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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.