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Finding the Fourth Proportional to 643,557.62, 965,393.17 and 238,754.52

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Solution

The fourth proportional to 643,557.62, 965,393.17 and 238,754.52 is: 358,152.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,557.62 : 965,393.17 = 238,754.52 : x
  2. Step 2: Convert to fraction form
    643,557.62/965,393.17 = 238,754.52/x
  3. Step 3: Cross multiply
    643,557.62x = 965,393.17 × 238,754.52
  4. Step 4: Simplify right side
    643,557.62x = 230,491,982,914.63
  5. Step 5: Solve for x
    x = 230,491,982,914.63/643,557.62
  6. Step 6: Final answer
    x = 358,152.83

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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.