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Finding the Fourth Proportional to 202,436.60, 303,654.90 and 71,108.60

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Solution

The fourth proportional to 202,436.60, 303,654.90 and 71,108.60 is: 106,662.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,436.60 : 303,654.90 = 71,108.60 : x
  2. Step 2: Convert to fraction form
    202,436.60/303,654.90 = 71,108.60/x
  3. Step 3: Cross multiply
    202,436.60x = 303,654.90 × 71,108.60
  4. Step 4: Simplify right side
    202,436.60x = 21,592,474,822.14
  5. Step 5: Solve for x
    x = 21,592,474,822.14/202,436.60
  6. Step 6: Final answer
    x = 106,662.90

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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.