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Finding the Fourth Proportional to 617,930.40, 927,043.56 and 257,901.04

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Solution

The fourth proportional to 617,930.40, 927,043.56 and 257,901.04 is: 386,913.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,930.40 : 927,043.56 = 257,901.04 : x
  2. Step 2: Convert to fraction form
    617,930.40/927,043.56 = 257,901.04/x
  3. Step 3: Cross multiply
    617,930.40x = 927,043.56 × 257,901.04
  4. Step 4: Simplify right side
    617,930.40x = 239,085,498,249.30
  5. Step 5: Solve for x
    x = 239,085,498,249.30/617,930.40
  6. Step 6: Final answer
    x = 386,913.31

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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.