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Finding the Fourth Proportional to 319,607.70, 441,059.92 and 176,371.88

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Solution

The fourth proportional to 319,607.70, 441,059.92 and 176,371.88 is: 243,393.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,607.70 : 441,059.92 = 176,371.88 : x
  2. Step 2: Convert to fraction form
    319,607.70/441,059.92 = 176,371.88/x
  3. Step 3: Cross multiply
    319,607.70x = 441,059.92 × 176,371.88
  4. Step 4: Simplify right side
    319,607.70x = 77,790,567,283.05
  5. Step 5: Solve for x
    x = 77,790,567,283.05/319,607.70
  6. Step 6: Final answer
    x = 243,393.91

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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.