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Finding the Fourth Proportional to 216,371.43, 324,557.28 and 141,554.43

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Solution

The fourth proportional to 216,371.43, 324,557.28 and 141,554.43 is: 212,331.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,371.43 : 324,557.28 = 141,554.43 : x
  2. Step 2: Convert to fraction form
    216,371.43/324,557.28 = 141,554.43/x
  3. Step 3: Cross multiply
    216,371.43x = 324,557.28 × 141,554.43
  4. Step 4: Simplify right side
    216,371.43x = 45,942,520,772.75
  5. Step 5: Solve for x
    x = 45,942,520,772.75/216,371.43
  6. Step 6: Final answer
    x = 212,331.73

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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.