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Finding the Fourth Proportional to 131,996.80, 197,822.40 and 53,046.40

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Solution

The fourth proportional to 131,996.80, 197,822.40 and 53,046.40 is: 79,500.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,996.80 : 197,822.40 = 53,046.40 : x
  2. Step 2: Convert to fraction form
    131,996.80/197,822.40 = 53,046.40/x
  3. Step 3: Cross multiply
    131,996.80x = 197,822.40 × 53,046.40
  4. Step 4: Simplify right side
    131,996.80x = 10,493,766,159.36
  5. Step 5: Solve for x
    x = 10,493,766,159.36/131,996.80
  6. Step 6: Final answer
    x = 79,500.16

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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.