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Finding the Fourth Proportional to 393,982.73, 590,866.46 and 141,216.11

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Solution

The fourth proportional to 393,982.73, 590,866.46 and 141,216.11 is: 211,785.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,982.73 : 590,866.46 = 141,216.11 : x
  2. Step 2: Convert to fraction form
    393,982.73/590,866.46 = 141,216.11/x
  3. Step 3: Cross multiply
    393,982.73x = 590,866.46 × 141,216.11
  4. Step 4: Simplify right side
    393,982.73x = 83,439,862,294.15
  5. Step 5: Solve for x
    x = 83,439,862,294.15/393,982.73
  6. Step 6: Final answer
    x = 211,785.58

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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.