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Finding the Fourth Proportional to 201,112.40, 301,668.60 and 82,744.40

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Solution

The fourth proportional to 201,112.40, 301,668.60 and 82,744.40 is: 124,116.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,112.40 : 301,668.60 = 82,744.40 : x
  2. Step 2: Convert to fraction form
    201,112.40/301,668.60 = 82,744.40/x
  3. Step 3: Cross multiply
    201,112.40x = 301,668.60 × 82,744.40
  4. Step 4: Simplify right side
    201,112.40x = 24,961,387,305.84
  5. Step 5: Solve for x
    x = 24,961,387,305.84/201,112.40
  6. Step 6: Final answer
    x = 124,116.60

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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.