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Finding the Fourth Proportional to 443,866.64, 612,538.74 and 239,917.14

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Solution

The fourth proportional to 443,866.64, 612,538.74 and 239,917.14 is: 331,087.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,866.64 : 612,538.74 = 239,917.14 : x
  2. Step 2: Convert to fraction form
    443,866.64/612,538.74 = 239,917.14/x
  3. Step 3: Cross multiply
    443,866.64x = 612,538.74 × 239,917.14
  4. Step 4: Simplify right side
    443,866.64x = 146,958,542,640.00
  5. Step 5: Solve for x
    x = 146,958,542,640.00/443,866.64
  6. Step 6: Final answer
    x = 331,087.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.